Home / 39,112.76-53,974.65-21,649.55

Finding the Fourth Proportional to 39,112.76, 53,974.65 and 21,649.55

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Solution

The fourth proportional to 39,112.76, 53,974.65 and 21,649.55 is: 29,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,112.76 : 53,974.65 = 21,649.55 : x
  2. Step 2: Convert to fraction form
    39,112.76/53,974.65 = 21,649.55/x
  3. Step 3: Cross multiply
    39,112.76x = 53,974.65 × 21,649.55
  4. Step 4: Simplify right side
    39,112.76x = 1,168,526,614.03
  5. Step 5: Solve for x
    x = 1,168,526,614.03/39,112.76
  6. Step 6: Final answer
    x = 29,875.85

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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.