Home / 12,615.12-18,988.47-10,712.43

Finding the Fourth Proportional to 12,615.12, 18,988.47 and 10,712.43

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Solution

The fourth proportional to 12,615.12, 18,988.47 and 10,712.43 is: 16,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.12 : 18,988.47 = 10,712.43 : x
  2. Step 2: Convert to fraction form
    12,615.12/18,988.47 = 10,712.43/x
  3. Step 3: Cross multiply
    12,615.12x = 18,988.47 × 10,712.43
  4. Step 4: Simplify right side
    12,615.12x = 203,412,655.68
  5. Step 5: Solve for x
    x = 203,412,655.68/12,615.12
  6. Step 6: Final answer
    x = 16,124.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.