Home / 13,689.90-20,534.72-4,329.92

Finding the Fourth Proportional to 13,689.90, 20,534.72 and 4,329.92

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Solution

The fourth proportional to 13,689.90, 20,534.72 and 4,329.92 is: 6,494.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.90 : 20,534.72 = 4,329.92 : x
  2. Step 2: Convert to fraction form
    13,689.90/20,534.72 = 4,329.92/x
  3. Step 3: Cross multiply
    13,689.90x = 20,534.72 × 4,329.92
  4. Step 4: Simplify right side
    13,689.90x = 88,913,724.51
  5. Step 5: Solve for x
    x = 88,913,724.51/13,689.90
  6. Step 6: Final answer
    x = 6,494.84

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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.