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Finding the Fourth Proportional to 26,980.40, 40,459.80 and 9,441.20

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Solution

The fourth proportional to 26,980.40, 40,459.80 and 9,441.20 is: 14,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,980.40 : 40,459.80 = 9,441.20 : x
  2. Step 2: Convert to fraction form
    26,980.40/40,459.80 = 9,441.20/x
  3. Step 3: Cross multiply
    26,980.40x = 40,459.80 × 9,441.20
  4. Step 4: Simplify right side
    26,980.40x = 381,989,063.76
  5. Step 5: Solve for x
    x = 381,989,063.76/26,980.40
  6. Step 6: Final answer
    x = 14,158.02

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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.