Home / 18,417.47-25,425.18-12,756.51

Finding the Fourth Proportional to 18,417.47, 25,425.18 and 12,756.51

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Solution

The fourth proportional to 18,417.47, 25,425.18 and 12,756.51 is: 17,610.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,417.47 : 25,425.18 = 12,756.51 : x
  2. Step 2: Convert to fraction form
    18,417.47/25,425.18 = 12,756.51/x
  3. Step 3: Cross multiply
    18,417.47x = 25,425.18 × 12,756.51
  4. Step 4: Simplify right side
    18,417.47x = 324,336,562.92
  5. Step 5: Solve for x
    x = 324,336,562.92/18,417.47
  6. Step 6: Final answer
    x = 17,610.27

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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.