Home / 13,151.29-18,137.56-11,117.05

Finding the Fourth Proportional to 13,151.29, 18,137.56 and 11,117.05

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Solution

The fourth proportional to 13,151.29, 18,137.56 and 11,117.05 is: 15,332.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.29 : 18,137.56 = 11,117.05 : x
  2. Step 2: Convert to fraction form
    13,151.29/18,137.56 = 11,117.05/x
  3. Step 3: Cross multiply
    13,151.29x = 18,137.56 × 11,117.05
  4. Step 4: Simplify right side
    13,151.29x = 201,636,070.71
  5. Step 5: Solve for x
    x = 201,636,070.71/13,151.29
  6. Step 6: Final answer
    x = 15,332.04

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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.