Home / 15,643.29-21,582.25-10,861.97

Finding the Fourth Proportional to 15,643.29, 21,582.25 and 10,861.97

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Solution

The fourth proportional to 15,643.29, 21,582.25 and 10,861.97 is: 14,985.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.29 : 21,582.25 = 10,861.97 : x
  2. Step 2: Convert to fraction form
    15,643.29/21,582.25 = 10,861.97/x
  3. Step 3: Cross multiply
    15,643.29x = 21,582.25 × 10,861.97
  4. Step 4: Simplify right side
    15,643.29x = 234,425,616.97
  5. Step 5: Solve for x
    x = 234,425,616.97/15,643.29
  6. Step 6: Final answer
    x = 14,985.69

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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.