Home / 13,081.95-18,053.21-7,113.67

Finding the Fourth Proportional to 13,081.95, 18,053.21 and 7,113.67

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Solution

The fourth proportional to 13,081.95, 18,053.21 and 7,113.67 is: 9,816.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.95 : 18,053.21 = 7,113.67 : x
  2. Step 2: Convert to fraction form
    13,081.95/18,053.21 = 7,113.67/x
  3. Step 3: Cross multiply
    13,081.95x = 18,053.21 × 7,113.67
  4. Step 4: Simplify right side
    13,081.95x = 128,424,578.38
  5. Step 5: Solve for x
    x = 128,424,578.38/13,081.95
  6. Step 6: Final answer
    x = 9,816.93

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Half scale
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Double scale
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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.