Home / 10,155.28-14,005.56-6,617.20

Finding the Fourth Proportional to 10,155.28, 14,005.56 and 6,617.20

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Solution

The fourth proportional to 10,155.28, 14,005.56 and 6,617.20 is: 9,126.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.28 : 14,005.56 = 6,617.20 : x
  2. Step 2: Convert to fraction form
    10,155.28/14,005.56 = 6,617.20/x
  3. Step 3: Cross multiply
    10,155.28x = 14,005.56 × 6,617.20
  4. Step 4: Simplify right side
    10,155.28x = 92,677,591.63
  5. Step 5: Solve for x
    x = 92,677,591.63/10,155.28
  6. Step 6: Final answer
    x = 9,126.05

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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.