Home / 19,661.12-27,132.18-13,696.10

Finding the Fourth Proportional to 19,661.12, 27,132.18 and 13,696.10

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Solution

The fourth proportional to 19,661.12, 27,132.18 and 13,696.10 is: 18,900.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.12 : 27,132.18 = 13,696.10 : x
  2. Step 2: Convert to fraction form
    19,661.12/27,132.18 = 13,696.10/x
  3. Step 3: Cross multiply
    19,661.12x = 27,132.18 × 13,696.10
  4. Step 4: Simplify right side
    19,661.12x = 371,605,050.50
  5. Step 5: Solve for x
    x = 371,605,050.50/19,661.12
  6. Step 6: Final answer
    x = 18,900.50

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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.