Home / 28,688,771,657.24-39,590,642,394.39-15,828,410,969.21

Finding the Fourth Proportional to 28,688,771,657.24, 39,590,642,394.39 and 15,828,410,969.21

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Solution

The fourth proportional to 28,688,771,657.24, 39,590,642,394.39 and 15,828,410,969.21 is: 21,843,283,004.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688,771,657.24 : 39,590,642,394.39 = 15,828,410,969.21 : x
  2. Step 2: Convert to fraction form
    28,688,771,657.24/39,590,642,394.39 = 15,828,410,969.21/x
  3. Step 3: Cross multiply
    28,688,771,657.24x = 39,590,642,394.39 × 15,828,410,969.21
  4. Step 4: Simplify right side
    28,688,771,657.24x = 626,656,958,353,433,034,752
  5. Step 5: Solve for x
    x = 626,656,958,353,433,034,752/28,688,771,657.24
  6. Step 6: Final answer
    x = 21,843,283,004.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.