Home / 15,530.89-21,432.54-8,723.96

Finding the Fourth Proportional to 15,530.89, 21,432.54 and 8,723.96

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Solution

The fourth proportional to 15,530.89, 21,432.54 and 8,723.96 is: 12,039.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.89 : 21,432.54 = 8,723.96 : x
  2. Step 2: Convert to fraction form
    15,530.89/21,432.54 = 8,723.96/x
  3. Step 3: Cross multiply
    15,530.89x = 21,432.54 × 8,723.96
  4. Step 4: Simplify right side
    15,530.89x = 186,976,675.24
  5. Step 5: Solve for x
    x = 186,976,675.24/15,530.89
  6. Step 6: Final answer
    x = 12,039.02

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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.