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Finding the Fourth Proportional to 32,880.40, 49,320.60 and 9,187.90

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Solution

The fourth proportional to 32,880.40, 49,320.60 and 9,187.90 is: 13,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,880.40 : 49,320.60 = 9,187.90 : x
  2. Step 2: Convert to fraction form
    32,880.40/49,320.60 = 9,187.90/x
  3. Step 3: Cross multiply
    32,880.40x = 49,320.60 × 9,187.90
  4. Step 4: Simplify right side
    32,880.40x = 453,152,740.74
  5. Step 5: Solve for x
    x = 453,152,740.74/32,880.40
  6. Step 6: Final answer
    x = 13,781.85

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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.