Home / 13,590.32-18,750.22-7,923.78

Finding the Fourth Proportional to 13,590.32, 18,750.22 and 7,923.78

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Solution

The fourth proportional to 13,590.32, 18,750.22 and 7,923.78 is: 10,932.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.32 : 18,750.22 = 7,923.78 : x
  2. Step 2: Convert to fraction form
    13,590.32/18,750.22 = 7,923.78/x
  3. Step 3: Cross multiply
    13,590.32x = 18,750.22 × 7,923.78
  4. Step 4: Simplify right side
    13,590.32x = 148,572,618.23
  5. Step 5: Solve for x
    x = 148,572,618.23/13,590.32
  6. Step 6: Final answer
    x = 10,932.24

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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.