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Finding the Fourth Proportional to 27,988.40, 41,981.70 and 9,269.30

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Solution

The fourth proportional to 27,988.40, 41,981.70 and 9,269.30 is: 13,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.40 : 41,981.70 = 9,269.30 : x
  2. Step 2: Convert to fraction form
    27,988.40/41,981.70 = 9,269.30/x
  3. Step 3: Cross multiply
    27,988.40x = 41,981.70 × 9,269.30
  4. Step 4: Simplify right side
    27,988.40x = 389,140,971.81
  5. Step 5: Solve for x
    x = 389,140,971.81/27,988.40
  6. Step 6: Final answer
    x = 13,903.65

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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.