Home / 21,439.38-32,005.50-18,637.62

Finding the Fourth Proportional to 21,439.38, 32,005.50 and 18,637.62

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Solution

The fourth proportional to 21,439.38, 32,005.50 and 18,637.62 is: 27,822.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.38 : 32,005.50 = 18,637.62 : x
  2. Step 2: Convert to fraction form
    21,439.38/32,005.50 = 18,637.62/x
  3. Step 3: Cross multiply
    21,439.38x = 32,005.50 × 18,637.62
  4. Step 4: Simplify right side
    21,439.38x = 596,506,346.91
  5. Step 5: Solve for x
    x = 596,506,346.91/21,439.38
  6. Step 6: Final answer
    x = 27,822.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.