Home / 15,140.66-20,897.15-8,766.36

Finding the Fourth Proportional to 15,140.66, 20,897.15 and 8,766.36

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Solution

The fourth proportional to 15,140.66, 20,897.15 and 8,766.36 is: 12,099.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.66 : 20,897.15 = 8,766.36 : x
  2. Step 2: Convert to fraction form
    15,140.66/20,897.15 = 8,766.36/x
  3. Step 3: Cross multiply
    15,140.66x = 20,897.15 × 8,766.36
  4. Step 4: Simplify right side
    15,140.66x = 183,191,896.04
  5. Step 5: Solve for x
    x = 183,191,896.04/15,140.66
  6. Step 6: Final answer
    x = 12,099.34

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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.