Home / 20,729,127.30-28,615,368.16-13,390,538.02

Finding the Fourth Proportional to 20,729,127.30, 28,615,368.16 and 13,390,538.02

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Solution

The fourth proportional to 20,729,127.30, 28,615,368.16 and 13,390,538.02 is: 18,484,867.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729,127.30 : 28,615,368.16 = 13,390,538.02 : x
  2. Step 2: Convert to fraction form
    20,729,127.30/28,615,368.16 = 13,390,538.02/x
  3. Step 3: Cross multiply
    20,729,127.30x = 28,615,368.16 × 13,390,538.02
  4. Step 4: Simplify right side
    20,729,127.30x = 383,175,175,302,777.44
  5. Step 5: Solve for x
    x = 383,175,175,302,777.44/20,729,127.30
  6. Step 6: Final answer
    x = 18,484,867.68

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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.