Home / 42,459.90-63,677.70-12,870.60

Finding the Fourth Proportional to 42,459.90, 63,677.70 and 12,870.60

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Solution

The fourth proportional to 42,459.90, 63,677.70 and 12,870.60 is: 19,302.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,459.90 : 63,677.70 = 12,870.60 : x
  2. Step 2: Convert to fraction form
    42,459.90/63,677.70 = 12,870.60/x
  3. Step 3: Cross multiply
    42,459.90x = 63,677.70 × 12,870.60
  4. Step 4: Simplify right side
    42,459.90x = 819,570,205.62
  5. Step 5: Solve for x
    x = 819,570,205.62/42,459.90
  6. Step 6: Final answer
    x = 19,302.22

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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.