Home / 15,539.29-21,444.10-8,465.69

Finding the Fourth Proportional to 15,539.29, 21,444.10 and 8,465.69

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Solution

The fourth proportional to 15,539.29, 21,444.10 and 8,465.69 is: 11,682.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,539.29 : 21,444.10 = 8,465.69 : x
  2. Step 2: Convert to fraction form
    15,539.29/21,444.10 = 8,465.69/x
  3. Step 3: Cross multiply
    15,539.29x = 21,444.10 × 8,465.69
  4. Step 4: Simplify right side
    15,539.29x = 181,539,135.38
  5. Step 5: Solve for x
    x = 181,539,135.38/15,539.29
  6. Step 6: Final answer
    x = 11,682.59

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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.