Home / 39,081.12-53,931.78-21,176.20

Finding the Fourth Proportional to 39,081.12, 53,931.78 and 21,176.20

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Solution

The fourth proportional to 39,081.12, 53,931.78 and 21,176.20 is: 29,223.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,081.12 : 53,931.78 = 21,176.20 : x
  2. Step 2: Convert to fraction form
    39,081.12/53,931.78 = 21,176.20/x
  3. Step 3: Cross multiply
    39,081.12x = 53,931.78 × 21,176.20
  4. Step 4: Simplify right side
    39,081.12x = 1,142,070,159.64
  5. Step 5: Solve for x
    x = 1,142,070,159.64/39,081.12
  6. Step 6: Final answer
    x = 29,223.07

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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.