Home / 28,209.74-38,929.34-15,463.00

Finding the Fourth Proportional to 28,209.74, 38,929.34 and 15,463.00

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Solution

The fourth proportional to 28,209.74, 38,929.34 and 15,463.00 is: 21,338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.74 : 38,929.34 = 15,463.00 : x
  2. Step 2: Convert to fraction form
    28,209.74/38,929.34 = 15,463.00/x
  3. Step 3: Cross multiply
    28,209.74x = 38,929.34 × 15,463.00
  4. Step 4: Simplify right side
    28,209.74x = 601,964,439.12
  5. Step 5: Solve for x
    x = 601,964,439.12/28,209.74
  6. Step 6: Final answer
    x = 21,338.89

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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.