Home / 15,303,400.61-21,118,437.65-8,428,522.37

Finding the Fourth Proportional to 15,303,400.61, 21,118,437.65 and 8,428,522.37

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Solution

The fourth proportional to 15,303,400.61, 21,118,437.65 and 8,428,522.37 is: 11,631,220.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303,400.61 : 21,118,437.65 = 8,428,522.37 : x
  2. Step 2: Convert to fraction form
    15,303,400.61/21,118,437.65 = 8,428,522.37/x
  3. Step 3: Cross multiply
    15,303,400.61x = 21,118,437.65 × 8,428,522.37
  4. Step 4: Simplify right side
    15,303,400.61x = 177,997,224,067,954.34
  5. Step 5: Solve for x
    x = 177,997,224,067,954.34/15,303,400.61
  6. Step 6: Final answer
    x = 11,631,220.32

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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.