Home / 38,407.43-53,002.47-21,412.75

Finding the Fourth Proportional to 38,407.43, 53,002.47 and 21,412.75

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Solution

The fourth proportional to 38,407.43, 53,002.47 and 21,412.75 is: 29,549.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,407.43 : 53,002.47 = 21,412.75 : x
  2. Step 2: Convert to fraction form
    38,407.43/53,002.47 = 21,412.75/x
  3. Step 3: Cross multiply
    38,407.43x = 53,002.47 × 21,412.75
  4. Step 4: Simplify right side
    38,407.43x = 1,134,928,639.49
  5. Step 5: Solve for x
    x = 1,134,928,639.49/38,407.43
  6. Step 6: Final answer
    x = 29,549.72

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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.