Home / 9,638.40-14,387.91-8,916.96

Finding the Fourth Proportional to 9,638.40, 14,387.91 and 8,916.96

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Solution

The fourth proportional to 9,638.40, 14,387.91 and 8,916.96 is: 13,310.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,638.40 : 14,387.91 = 8,916.96 : x
  2. Step 2: Convert to fraction form
    9,638.40/14,387.91 = 8,916.96/x
  3. Step 3: Cross multiply
    9,638.40x = 14,387.91 × 8,916.96
  4. Step 4: Simplify right side
    9,638.40x = 128,296,417.95
  5. Step 5: Solve for x
    x = 128,296,417.95/9,638.40
  6. Step 6: Final answer
    x = 13,310.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.