Home / 22,921.05-34,352.87-12,390.69

Finding the Fourth Proportional to 22,921.05, 34,352.87 and 12,390.69

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Solution

The fourth proportional to 22,921.05, 34,352.87 and 12,390.69 is: 18,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,921.05 : 34,352.87 = 12,390.69 : x
  2. Step 2: Convert to fraction form
    22,921.05/34,352.87 = 12,390.69/x
  3. Step 3: Cross multiply
    22,921.05x = 34,352.87 × 12,390.69
  4. Step 4: Simplify right side
    22,921.05x = 425,655,700.83
  5. Step 5: Solve for x
    x = 425,655,700.83/22,921.05
  6. Step 6: Final answer
    x = 18,570.51

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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.