Home / 13,345.16-20,010.85-7,800.10

Finding the Fourth Proportional to 13,345.16, 20,010.85 and 7,800.10

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Solution

The fourth proportional to 13,345.16, 20,010.85 and 7,800.10 is: 11,696.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.16 : 20,010.85 = 7,800.10 : x
  2. Step 2: Convert to fraction form
    13,345.16/20,010.85 = 7,800.10/x
  3. Step 3: Cross multiply
    13,345.16x = 20,010.85 × 7,800.10
  4. Step 4: Simplify right side
    13,345.16x = 156,086,561.56
  5. Step 5: Solve for x
    x = 156,086,561.56/13,345.16
  6. Step 6: Final answer
    x = 11,696.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.