Home / 39,717.48-54,809.86-21,812.68

Finding the Fourth Proportional to 39,717.48, 54,809.86 and 21,812.68

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Solution

The fourth proportional to 39,717.48, 54,809.86 and 21,812.68 is: 30,101.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.48 : 54,809.86 = 21,812.68 : x
  2. Step 2: Convert to fraction form
    39,717.48/54,809.86 = 21,812.68/x
  3. Step 3: Cross multiply
    39,717.48x = 54,809.86 × 21,812.68
  4. Step 4: Simplify right side
    39,717.48x = 1,195,549,937.02
  5. Step 5: Solve for x
    x = 1,195,549,937.02/39,717.48
  6. Step 6: Final answer
    x = 30,101.35

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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.