Home / 10,428.48-14,390.88-6,239.04

Finding the Fourth Proportional to 10,428.48, 14,390.88 and 6,239.04

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Solution

The fourth proportional to 10,428.48, 14,390.88 and 6,239.04 is: 8,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.48 : 14,390.88 = 6,239.04 : x
  2. Step 2: Convert to fraction form
    10,428.48/14,390.88 = 6,239.04/x
  3. Step 3: Cross multiply
    10,428.48x = 14,390.88 × 6,239.04
  4. Step 4: Simplify right side
    10,428.48x = 89,785,275.96
  5. Step 5: Solve for x
    x = 89,785,275.96/10,428.48
  6. Step 6: Final answer
    x = 8,609.62

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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.