Home / 15,216.22-21,000.18-8,502.76

Finding the Fourth Proportional to 15,216.22, 21,000.18 and 8,502.76

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Solution

The fourth proportional to 15,216.22, 21,000.18 and 8,502.76 is: 11,734.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.22 : 21,000.18 = 8,502.76 : x
  2. Step 2: Convert to fraction form
    15,216.22/21,000.18 = 8,502.76/x
  3. Step 3: Cross multiply
    15,216.22x = 21,000.18 × 8,502.76
  4. Step 4: Simplify right side
    15,216.22x = 178,559,490.50
  5. Step 5: Solve for x
    x = 178,559,490.50/15,216.22
  6. Step 6: Final answer
    x = 11,734.81

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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.