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Finding the Fourth Proportional to 8,946.20, 13,430.10 and 8,881.40

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Solution

The fourth proportional to 8,946.20, 13,430.10 and 8,881.40 is: 13,332.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,946.20 : 13,430.10 = 8,881.40 : x
  2. Step 2: Convert to fraction form
    8,946.20/13,430.10 = 8,881.40/x
  3. Step 3: Cross multiply
    8,946.20x = 13,430.10 × 8,881.40
  4. Step 4: Simplify right side
    8,946.20x = 119,278,090.14
  5. Step 5: Solve for x
    x = 119,278,090.14/8,946.20
  6. Step 6: Final answer
    x = 13,332.82

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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.