Home / 15,635.27-21,574.73-12,456.65

Finding the Fourth Proportional to 15,635.27, 21,574.73 and 12,456.65

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Solution

The fourth proportional to 15,635.27, 21,574.73 and 12,456.65 is: 17,188.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,635.27 : 21,574.73 = 12,456.65 : x
  2. Step 2: Convert to fraction form
    15,635.27/21,574.73 = 12,456.65/x
  3. Step 3: Cross multiply
    15,635.27x = 21,574.73 × 12,456.65
  4. Step 4: Simplify right side
    15,635.27x = 268,748,690.30
  5. Step 5: Solve for x
    x = 268,748,690.30/15,635.27
  6. Step 6: Final answer
    x = 17,188.62

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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.