Home / 10,385.12-14,332.56-6,138.28

Finding the Fourth Proportional to 10,385.12, 14,332.56 and 6,138.28

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Solution

The fourth proportional to 10,385.12, 14,332.56 and 6,138.28 is: 8,471.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.12 : 14,332.56 = 6,138.28 : x
  2. Step 2: Convert to fraction form
    10,385.12/14,332.56 = 6,138.28/x
  3. Step 3: Cross multiply
    10,385.12x = 14,332.56 × 6,138.28
  4. Step 4: Simplify right side
    10,385.12x = 87,977,266.40
  5. Step 5: Solve for x
    x = 87,977,266.40/10,385.12
  6. Step 6: Final answer
    x = 8,471.47

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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.