Home / 28,082.69-38,756.54-15,509.87

Finding the Fourth Proportional to 28,082.69, 38,756.54 and 15,509.87

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Solution

The fourth proportional to 28,082.69, 38,756.54 and 15,509.87 is: 21,404.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.69 : 38,756.54 = 15,509.87 : x
  2. Step 2: Convert to fraction form
    28,082.69/38,756.54 = 15,509.87/x
  3. Step 3: Cross multiply
    28,082.69x = 38,756.54 × 15,509.87
  4. Step 4: Simplify right side
    28,082.69x = 601,108,897.05
  5. Step 5: Solve for x
    x = 601,108,897.05/28,082.69
  6. Step 6: Final answer
    x = 21,404.96

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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.