Home / 13,639.01-20,454.12-5,316.98

Finding the Fourth Proportional to 13,639.01, 20,454.12 and 5,316.98

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Solution

The fourth proportional to 13,639.01, 20,454.12 and 5,316.98 is: 7,973.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.01 : 20,454.12 = 5,316.98 : x
  2. Step 2: Convert to fraction form
    13,639.01/20,454.12 = 5,316.98/x
  3. Step 3: Cross multiply
    13,639.01x = 20,454.12 × 5,316.98
  4. Step 4: Simplify right side
    13,639.01x = 108,754,044.69
  5. Step 5: Solve for x
    x = 108,754,044.69/13,639.01
  6. Step 6: Final answer
    x = 7,973.75

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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.