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Finding the Fourth Proportional to 26,312.40, 39,466.80 and 8,542.80

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Solution

The fourth proportional to 26,312.40, 39,466.80 and 8,542.80 is: 12,813.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,312.40 : 39,466.80 = 8,542.80 : x
  2. Step 2: Convert to fraction form
    26,312.40/39,466.80 = 8,542.80/x
  3. Step 3: Cross multiply
    26,312.40x = 39,466.80 × 8,542.80
  4. Step 4: Simplify right side
    26,312.40x = 337,156,979.04
  5. Step 5: Solve for x
    x = 337,156,979.04/26,312.40
  6. Step 6: Final answer
    x = 12,813.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.