Home / 28,688,771,659.74-39,590,642,397.87-15,828,410,971.68

Finding the Fourth Proportional to 28,688,771,659.74, 39,590,642,397.87 and 15,828,410,971.68

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Solution

The fourth proportional to 28,688,771,659.74, 39,590,642,397.87 and 15,828,410,971.68 is: 21,843,283,007.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688,771,659.74 : 39,590,642,397.87 = 15,828,410,971.68 : x
  2. Step 2: Convert to fraction form
    28,688,771,659.74/39,590,642,397.87 = 15,828,410,971.68/x
  3. Step 3: Cross multiply
    28,688,771,659.74x = 39,590,642,397.87 × 15,828,410,971.68
  4. Step 4: Simplify right side
    28,688,771,659.74x = 626,656,958,506,304,929,792
  5. Step 5: Solve for x
    x = 626,656,958,506,304,929,792/28,688,771,659.74
  6. Step 6: Final answer
    x = 21,843,283,007.68

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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.