Home / 20,307.39-28,024.13-11,354.87

Finding the Fourth Proportional to 20,307.39, 28,024.13 and 11,354.87

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Solution

The fourth proportional to 20,307.39, 28,024.13 and 11,354.87 is: 15,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.39 : 28,024.13 = 11,354.87 : x
  2. Step 2: Convert to fraction form
    20,307.39/28,024.13 = 11,354.87/x
  3. Step 3: Cross multiply
    20,307.39x = 28,024.13 × 11,354.87
  4. Step 4: Simplify right side
    20,307.39x = 318,210,156.12
  5. Step 5: Solve for x
    x = 318,210,156.12/20,307.39
  6. Step 6: Final answer
    x = 15,669.67

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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.