Home / 13,113.19-18,113.52-9,717.11

Finding the Fourth Proportional to 13,113.19, 18,113.52 and 9,717.11

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Solution

The fourth proportional to 13,113.19, 18,113.52 and 9,717.11 is: 13,422.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.19 : 18,113.52 = 9,717.11 : x
  2. Step 2: Convert to fraction form
    13,113.19/18,113.52 = 9,717.11/x
  3. Step 3: Cross multiply
    13,113.19x = 18,113.52 × 9,717.11
  4. Step 4: Simplify right side
    13,113.19x = 176,011,182.01
  5. Step 5: Solve for x
    x = 176,011,182.01/13,113.19
  6. Step 6: Final answer
    x = 13,422.45

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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.