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Finding the Fourth Proportional to 26,985.40, 40,448.40 and 9,446.20

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Solution

The fourth proportional to 26,985.40, 40,448.40 and 9,446.20 is: 14,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,985.40 : 40,448.40 = 9,446.20 : x
  2. Step 2: Convert to fraction form
    26,985.40/40,448.40 = 9,446.20/x
  3. Step 3: Cross multiply
    26,985.40x = 40,448.40 × 9,446.20
  4. Step 4: Simplify right side
    26,985.40x = 382,083,676.08
  5. Step 5: Solve for x
    x = 382,083,676.08/26,985.40
  6. Step 6: Final answer
    x = 14,158.90

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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.