Home / 20,701.18-28,563.28-13,541.58

Finding the Fourth Proportional to 20,701.18, 28,563.28 and 13,541.58

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Solution

The fourth proportional to 20,701.18, 28,563.28 and 13,541.58 is: 18,684.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.18 : 28,563.28 = 13,541.58 : x
  2. Step 2: Convert to fraction form
    20,701.18/28,563.28 = 13,541.58/x
  3. Step 3: Cross multiply
    20,701.18x = 28,563.28 × 13,541.58
  4. Step 4: Simplify right side
    20,701.18x = 386,791,941.18
  5. Step 5: Solve for x
    x = 386,791,941.18/20,701.18
  6. Step 6: Final answer
    x = 18,684.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.