Home / 38,478.04-53,098.18-21,711.08

Finding the Fourth Proportional to 38,478.04, 53,098.18 and 21,711.08

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Solution

The fourth proportional to 38,478.04, 53,098.18 and 21,711.08 is: 29,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,478.04 : 53,098.18 = 21,711.08 : x
  2. Step 2: Convert to fraction form
    38,478.04/53,098.18 = 21,711.08/x
  3. Step 3: Cross multiply
    38,478.04x = 53,098.18 × 21,711.08
  4. Step 4: Simplify right side
    38,478.04x = 1,152,818,833.83
  5. Step 5: Solve for x
    x = 1,152,818,833.83/38,478.04
  6. Step 6: Final answer
    x = 29,960.44

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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.