Home / 23,178.86-31,986.78-12,568.46

Finding the Fourth Proportional to 23,178.86, 31,986.78 and 12,568.46

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Solution

The fourth proportional to 23,178.86, 31,986.78 and 12,568.46 is: 17,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,178.86 : 31,986.78 = 12,568.46 : x
  2. Step 2: Convert to fraction form
    23,178.86/31,986.78 = 12,568.46/x
  3. Step 3: Cross multiply
    23,178.86x = 31,986.78 × 12,568.46
  4. Step 4: Simplify right side
    23,178.86x = 402,024,564.96
  5. Step 5: Solve for x
    x = 402,024,564.96/23,178.86
  6. Step 6: Final answer
    x = 17,344.45

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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.