Home / 15,523.60-21,421.47-8,449.87

Finding the Fourth Proportional to 15,523.60, 21,421.47 and 8,449.87

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Solution

The fourth proportional to 15,523.60, 21,421.47 and 8,449.87 is: 11,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.60 : 21,421.47 = 8,449.87 : x
  2. Step 2: Convert to fraction form
    15,523.60/21,421.47 = 8,449.87/x
  3. Step 3: Cross multiply
    15,523.60x = 21,421.47 × 8,449.87
  4. Step 4: Simplify right side
    15,523.60x = 181,008,636.71
  5. Step 5: Solve for x
    x = 181,008,636.71/15,523.60
  6. Step 6: Final answer
    x = 11,660.22

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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.