Home / 20,332.72-30,509.52-15,400.72

Finding the Fourth Proportional to 20,332.72, 30,509.52 and 15,400.72

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Solution

The fourth proportional to 20,332.72, 30,509.52 and 15,400.72 is: 23,108.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.72 : 30,509.52 = 15,400.72 : x
  2. Step 2: Convert to fraction form
    20,332.72/30,509.52 = 15,400.72/x
  3. Step 3: Cross multiply
    20,332.72x = 30,509.52 × 15,400.72
  4. Step 4: Simplify right side
    20,332.72x = 469,868,574.85
  5. Step 5: Solve for x
    x = 469,868,574.85/20,332.72
  6. Step 6: Final answer
    x = 23,108.99

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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.