Home / 15,503.68-21,358.92-10,779.76

Finding the Fourth Proportional to 15,503.68, 21,358.92 and 10,779.76

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Solution

The fourth proportional to 15,503.68, 21,358.92 and 10,779.76 is: 14,850.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.68 : 21,358.92 = 10,779.76 : x
  2. Step 2: Convert to fraction form
    15,503.68/21,358.92 = 10,779.76/x
  3. Step 3: Cross multiply
    15,503.68x = 21,358.92 × 10,779.76
  4. Step 4: Simplify right side
    15,503.68x = 230,244,031.46
  5. Step 5: Solve for x
    x = 230,244,031.46/15,503.68
  6. Step 6: Final answer
    x = 14,850.93

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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.