Home / 18,909,678.56-28,373,376-9,319,829.36

Finding the Fourth Proportional to 18,909,678.56, 28,373,376 and 9,319,829.36

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Solution

The fourth proportional to 18,909,678.56, 28,373,376 and 9,319,829.36 is: 13,984,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,678.56 : 28,373,376 = 9,319,829.36 : x
  2. Step 2: Convert to fraction form
    18,909,678.56/28,373,376 = 9,319,829.36/x
  3. Step 3: Cross multiply
    18,909,678.56x = 28,373,376 × 9,319,829.36
  4. Step 4: Simplify right side
    18,909,678.56x = 264,435,022,687,119.34
  5. Step 5: Solve for x
    x = 264,435,022,687,119.34/18,909,678.56
  6. Step 6: Final answer
    x = 13,984,109.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.