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Finding the Fourth Proportional to 30,405.60, 45,545.22 and 15,569.64

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Solution

The fourth proportional to 30,405.60, 45,545.22 and 15,569.64 is: 23,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,405.60 : 45,545.22 = 15,569.64 : x
  2. Step 2: Convert to fraction form
    30,405.60/45,545.22 = 15,569.64/x
  3. Step 3: Cross multiply
    30,405.60x = 45,545.22 × 15,569.64
  4. Step 4: Simplify right side
    30,405.60x = 709,122,679.12
  5. Step 5: Solve for x
    x = 709,122,679.12/30,405.60
  6. Step 6: Final answer
    x = 23,322.11

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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.