Home / 38,478.06-53,121.81-29,331.63

Finding the Fourth Proportional to 38,478.06, 53,121.81 and 29,331.63

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Solution

The fourth proportional to 38,478.06, 53,121.81 and 29,331.63 is: 40,494.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,478.06 : 53,121.81 = 29,331.63 : x
  2. Step 2: Convert to fraction form
    38,478.06/53,121.81 = 29,331.63/x
  3. Step 3: Cross multiply
    38,478.06x = 53,121.81 × 29,331.63
  4. Step 4: Simplify right side
    38,478.06x = 1,558,149,275.85
  5. Step 5: Solve for x
    x = 1,558,149,275.85/38,478.06
  6. Step 6: Final answer
    x = 40,494.49

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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.