Home / 13,585.86-20,381.72-4,225.70

Finding the Fourth Proportional to 13,585.86, 20,381.72 and 4,225.70

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Solution

The fourth proportional to 13,585.86, 20,381.72 and 4,225.70 is: 6,339.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.86 : 20,381.72 = 4,225.70 : x
  2. Step 2: Convert to fraction form
    13,585.86/20,381.72 = 4,225.70/x
  3. Step 3: Cross multiply
    13,585.86x = 20,381.72 × 4,225.70
  4. Step 4: Simplify right side
    13,585.86x = 86,127,034.20
  5. Step 5: Solve for x
    x = 86,127,034.20/13,585.86
  6. Step 6: Final answer
    x = 6,339.46

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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.