Home / 56,130.50-84,209.21-18,690.90

Finding the Fourth Proportional to 56,130.50, 84,209.21 and 18,690.90

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Solution

The fourth proportional to 56,130.50, 84,209.21 and 18,690.90 is: 28,040.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,130.50 : 84,209.21 = 18,690.90 : x
  2. Step 2: Convert to fraction form
    56,130.50/84,209.21 = 18,690.90/x
  3. Step 3: Cross multiply
    56,130.50x = 84,209.21 × 18,690.90
  4. Step 4: Simplify right side
    56,130.50x = 1,573,945,498.55
  5. Step 5: Solve for x
    x = 1,573,945,498.55/56,130.50
  6. Step 6: Final answer
    x = 28,040.82

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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.