Home / 27,957.68-38,572.16-18,989.64

Finding the Fourth Proportional to 27,957.68, 38,572.16 and 18,989.64

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Solution

The fourth proportional to 27,957.68, 38,572.16 and 18,989.64 is: 26,199.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,957.68 : 38,572.16 = 18,989.64 : x
  2. Step 2: Convert to fraction form
    27,957.68/38,572.16 = 18,989.64/x
  3. Step 3: Cross multiply
    27,957.68x = 38,572.16 × 18,989.64
  4. Step 4: Simplify right side
    27,957.68x = 732,471,432.42
  5. Step 5: Solve for x
    x = 732,471,432.42/27,957.68
  6. Step 6: Final answer
    x = 26,199.29

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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.