Home / 28,355.12-39,127.52-16,419.27

Finding the Fourth Proportional to 28,355.12, 39,127.52 and 16,419.27

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Solution

The fourth proportional to 28,355.12, 39,127.52 and 16,419.27 is: 22,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.12 : 39,127.52 = 16,419.27 : x
  2. Step 2: Convert to fraction form
    28,355.12/39,127.52 = 16,419.27/x
  3. Step 3: Cross multiply
    28,355.12x = 39,127.52 × 16,419.27
  4. Step 4: Simplify right side
    28,355.12x = 642,445,315.31
  5. Step 5: Solve for x
    x = 642,445,315.31/28,355.12
  6. Step 6: Final answer
    x = 22,657.12

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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.