Home / 10,439.85-14,370.69-9,111.27

Finding the Fourth Proportional to 10,439.85, 14,370.69 and 9,111.27

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Solution

The fourth proportional to 10,439.85, 14,370.69 and 9,111.27 is: 12,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.85 : 14,370.69 = 9,111.27 : x
  2. Step 2: Convert to fraction form
    10,439.85/14,370.69 = 9,111.27/x
  3. Step 3: Cross multiply
    10,439.85x = 14,370.69 × 9,111.27
  4. Step 4: Simplify right side
    10,439.85x = 130,935,236.68
  5. Step 5: Solve for x
    x = 130,935,236.68/10,439.85
  6. Step 6: Final answer
    x = 12,541.87

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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.