Home / 28,815.04-39,764-16,239.52

Finding the Fourth Proportional to 28,815.04, 39,764 and 16,239.52

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Solution

The fourth proportional to 28,815.04, 39,764 and 16,239.52 is: 22,410.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.04 : 39,764 = 16,239.52 : x
  2. Step 2: Convert to fraction form
    28,815.04/39,764 = 16,239.52/x
  3. Step 3: Cross multiply
    28,815.04x = 39,764 × 16,239.52
  4. Step 4: Simplify right side
    28,815.04x = 645,748,273.28
  5. Step 5: Solve for x
    x = 645,748,273.28/28,815.04
  6. Step 6: Final answer
    x = 22,410.11

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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.