Home / 55,254.10-82,881.15-20,218.90

Finding the Fourth Proportional to 55,254.10, 82,881.15 and 20,218.90

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Solution

The fourth proportional to 55,254.10, 82,881.15 and 20,218.90 is: 30,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,254.10 : 82,881.15 = 20,218.90 : x
  2. Step 2: Convert to fraction form
    55,254.10/82,881.15 = 20,218.90/x
  3. Step 3: Cross multiply
    55,254.10x = 82,881.15 × 20,218.90
  4. Step 4: Simplify right side
    55,254.10x = 1,675,765,683.74
  5. Step 5: Solve for x
    x = 1,675,765,683.74/55,254.10
  6. Step 6: Final answer
    x = 30,328.35

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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.