Home / 13,127.54-18,123.54-8,649.66

Finding the Fourth Proportional to 13,127.54, 18,123.54 and 8,649.66

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Solution

The fourth proportional to 13,127.54, 18,123.54 and 8,649.66 is: 11,941.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.54 : 18,123.54 = 8,649.66 : x
  2. Step 2: Convert to fraction form
    13,127.54/18,123.54 = 8,649.66/x
  3. Step 3: Cross multiply
    13,127.54x = 18,123.54 × 8,649.66
  4. Step 4: Simplify right side
    13,127.54x = 156,762,459.00
  5. Step 5: Solve for x
    x = 156,762,459.00/13,127.54
  6. Step 6: Final answer
    x = 11,941.50

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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.