Home / 12,777.32-17,632.50-7,112

Finding the Fourth Proportional to 12,777.32, 17,632.50 and 7,112

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Solution

The fourth proportional to 12,777.32, 17,632.50 and 7,112 is: 9,814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.32 : 17,632.50 = 7,112 : x
  2. Step 2: Convert to fraction form
    12,777.32/17,632.50 = 7,112/x
  3. Step 3: Cross multiply
    12,777.32x = 17,632.50 × 7,112
  4. Step 4: Simplify right side
    12,777.32x = 125,402,340
  5. Step 5: Solve for x
    x = 125,402,340/12,777.32
  6. Step 6: Final answer
    x = 9,814.45

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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.