Home / 42,274.40-63,392.90-12,686.55

Finding the Fourth Proportional to 42,274.40, 63,392.90 and 12,686.55

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Solution

The fourth proportional to 42,274.40, 63,392.90 and 12,686.55 is: 19,024.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,274.40 : 63,392.90 = 12,686.55 : x
  2. Step 2: Convert to fraction form
    42,274.40/63,392.90 = 12,686.55/x
  3. Step 3: Cross multiply
    42,274.40x = 63,392.90 × 12,686.55
  4. Step 4: Simplify right side
    42,274.40x = 804,237,132.06
  5. Step 5: Solve for x
    x = 804,237,132.06/42,274.40
  6. Step 6: Final answer
    x = 19,024.21

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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.