Home / 15,124.14-20,875.86-9,819.72

Finding the Fourth Proportional to 15,124.14, 20,875.86 and 9,819.72

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Solution

The fourth proportional to 15,124.14, 20,875.86 and 9,819.72 is: 13,554.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.14 : 20,875.86 = 9,819.72 : x
  2. Step 2: Convert to fraction form
    15,124.14/20,875.86 = 9,819.72/x
  3. Step 3: Cross multiply
    15,124.14x = 20,875.86 × 9,819.72
  4. Step 4: Simplify right side
    15,124.14x = 204,995,099.96
  5. Step 5: Solve for x
    x = 204,995,099.96/15,124.14
  6. Step 6: Final answer
    x = 13,554.17

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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.