Home / 42,281.12-63,405.36-12,692

Finding the Fourth Proportional to 42,281.12, 63,405.36 and 12,692

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Solution

The fourth proportional to 42,281.12, 63,405.36 and 12,692 is: 19,033.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,281.12 : 63,405.36 = 12,692 : x
  2. Step 2: Convert to fraction form
    42,281.12/63,405.36 = 12,692/x
  3. Step 3: Cross multiply
    42,281.12x = 63,405.36 × 12,692
  4. Step 4: Simplify right side
    42,281.12x = 804,740,829.12
  5. Step 5: Solve for x
    x = 804,740,829.12/42,281.12
  6. Step 6: Final answer
    x = 19,033.10

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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.