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Finding the Fourth Proportional to 20,332.60, 30,498.90 and 13,356.70

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Solution

The fourth proportional to 20,332.60, 30,498.90 and 13,356.70 is: 20,035.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.60 : 30,498.90 = 13,356.70 : x
  2. Step 2: Convert to fraction form
    20,332.60/30,498.90 = 13,356.70/x
  3. Step 3: Cross multiply
    20,332.60x = 30,498.90 × 13,356.70
  4. Step 4: Simplify right side
    20,332.60x = 407,364,657.63
  5. Step 5: Solve for x
    x = 407,364,657.63/20,332.60
  6. Step 6: Final answer
    x = 20,035.05

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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.