Home / 11,418.24-15,742.72-9,715.04

Finding the Fourth Proportional to 11,418.24, 15,742.72 and 9,715.04

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Solution

The fourth proportional to 11,418.24, 15,742.72 and 9,715.04 is: 13,394.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.24 : 15,742.72 = 9,715.04 : x
  2. Step 2: Convert to fraction form
    11,418.24/15,742.72 = 9,715.04/x
  3. Step 3: Cross multiply
    11,418.24x = 15,742.72 × 9,715.04
  4. Step 4: Simplify right side
    11,418.24x = 152,941,154.51
  5. Step 5: Solve for x
    x = 152,941,154.51/11,418.24
  6. Step 6: Final answer
    x = 13,394.46

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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.