Home / 12,937.90-19,407.26-4,172.89

Finding the Fourth Proportional to 12,937.90, 19,407.26 and 4,172.89

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Solution

The fourth proportional to 12,937.90, 19,407.26 and 4,172.89 is: 6,259.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.90 : 19,407.26 = 4,172.89 : x
  2. Step 2: Convert to fraction form
    12,937.90/19,407.26 = 4,172.89/x
  3. Step 3: Cross multiply
    12,937.90x = 19,407.26 × 4,172.89
  4. Step 4: Simplify right side
    12,937.90x = 80,984,361.18
  5. Step 5: Solve for x
    x = 80,984,361.18/12,937.90
  6. Step 6: Final answer
    x = 6,259.47

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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.