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Finding the Fourth Proportional to 32,405.12, 48,605.16 and 12,688.16

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Solution

The fourth proportional to 32,405.12, 48,605.16 and 12,688.16 is: 19,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,405.12 : 48,605.16 = 12,688.16 : x
  2. Step 2: Convert to fraction form
    32,405.12/48,605.16 = 12,688.16/x
  3. Step 3: Cross multiply
    32,405.12x = 48,605.16 × 12,688.16
  4. Step 4: Simplify right side
    32,405.12x = 616,710,046.91
  5. Step 5: Solve for x
    x = 616,710,046.91/32,405.12
  6. Step 6: Final answer
    x = 19,031.25

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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.