Home / 12,328.29-17,013.15-11,386.51

Finding the Fourth Proportional to 12,328.29, 17,013.15 and 11,386.51

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Solution

The fourth proportional to 12,328.29, 17,013.15 and 11,386.51 is: 15,713.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.29 : 17,013.15 = 11,386.51 : x
  2. Step 2: Convert to fraction form
    12,328.29/17,013.15 = 11,386.51/x
  3. Step 3: Cross multiply
    12,328.29x = 17,013.15 × 11,386.51
  4. Step 4: Simplify right side
    12,328.29x = 193,720,402.61
  5. Step 5: Solve for x
    x = 193,720,402.61/12,328.29
  6. Step 6: Final answer
    x = 15,713.49

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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.