Home / 38,436.68-53,042.70-21,440.50

Finding the Fourth Proportional to 38,436.68, 53,042.70 and 21,440.50

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Solution

The fourth proportional to 38,436.68, 53,042.70 and 21,440.50 is: 29,587.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,436.68 : 53,042.70 = 21,440.50 : x
  2. Step 2: Convert to fraction form
    38,436.68/53,042.70 = 21,440.50/x
  3. Step 3: Cross multiply
    38,436.68x = 53,042.70 × 21,440.50
  4. Step 4: Simplify right side
    38,436.68x = 1,137,261,957.15
  5. Step 5: Solve for x
    x = 1,137,261,957.15/38,436.68
  6. Step 6: Final answer
    x = 29,587.93

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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.