Home / 38,519.46-53,154.95-21,520.35

Finding the Fourth Proportional to 38,519.46, 53,154.95 and 21,520.35

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Solution

The fourth proportional to 38,519.46, 53,154.95 and 21,520.35 is: 29,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,519.46 : 53,154.95 = 21,520.35 : x
  2. Step 2: Convert to fraction form
    38,519.46/53,154.95 = 21,520.35/x
  3. Step 3: Cross multiply
    38,519.46x = 53,154.95 × 21,520.35
  4. Step 4: Simplify right side
    38,519.46x = 1,143,913,020.63
  5. Step 5: Solve for x
    x = 1,143,913,020.63/38,519.46
  6. Step 6: Final answer
    x = 29,697.02

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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.