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Finding the Fourth Proportional to 30,287.60, 45,440.70 and 15,506.89

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Solution

The fourth proportional to 30,287.60, 45,440.70 and 15,506.89 is: 23,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.60 : 45,440.70 = 15,506.89 : x
  2. Step 2: Convert to fraction form
    30,287.60/45,440.70 = 15,506.89/x
  3. Step 3: Cross multiply
    30,287.60x = 45,440.70 × 15,506.89
  4. Step 4: Simplify right side
    30,287.60x = 704,643,936.42
  5. Step 5: Solve for x
    x = 704,643,936.42/30,287.60
  6. Step 6: Final answer
    x = 23,265.10

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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.