Home / 38,385.14-52,970.95-21,390.10

Finding the Fourth Proportional to 38,385.14, 52,970.95 and 21,390.10

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Solution

The fourth proportional to 38,385.14, 52,970.95 and 21,390.10 is: 29,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,385.14 : 52,970.95 = 21,390.10 : x
  2. Step 2: Convert to fraction form
    38,385.14/52,970.95 = 21,390.10/x
  3. Step 3: Cross multiply
    38,385.14x = 52,970.95 × 21,390.10
  4. Step 4: Simplify right side
    38,385.14x = 1,133,053,545.79
  5. Step 5: Solve for x
    x = 1,133,053,545.79/38,385.14
  6. Step 6: Final answer
    x = 29,518.03

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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.