Home / 19,332.58-28,960.40-12,738.78

Finding the Fourth Proportional to 19,332.58, 28,960.40 and 12,738.78

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Solution

The fourth proportional to 19,332.58, 28,960.40 and 12,738.78 is: 19,082.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,332.58 : 28,960.40 = 12,738.78 : x
  2. Step 2: Convert to fraction form
    19,332.58/28,960.40 = 12,738.78/x
  3. Step 3: Cross multiply
    19,332.58x = 28,960.40 × 12,738.78
  4. Step 4: Simplify right side
    19,332.58x = 368,920,164.31
  5. Step 5: Solve for x
    x = 368,920,164.31/19,332.58
  6. Step 6: Final answer
    x = 19,082.82

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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.