Home / 28,088.04-38,743.69-21,358.92

Finding the Fourth Proportional to 28,088.04, 38,743.69 and 21,358.92

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Solution

The fourth proportional to 28,088.04, 38,743.69 and 21,358.92 is: 29,461.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.04 : 38,743.69 = 21,358.92 : x
  2. Step 2: Convert to fraction form
    28,088.04/38,743.69 = 21,358.92/x
  3. Step 3: Cross multiply
    28,088.04x = 38,743.69 × 21,358.92
  4. Step 4: Simplify right side
    28,088.04x = 827,523,375.21
  5. Step 5: Solve for x
    x = 827,523,375.21/28,088.04
  6. Step 6: Final answer
    x = 29,461.77

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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.