Home / 19,855.18-27,400.61-10,902.16

Finding the Fourth Proportional to 19,855.18, 27,400.61 and 10,902.16

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Solution

The fourth proportional to 19,855.18, 27,400.61 and 10,902.16 is: 15,045.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.18 : 27,400.61 = 10,902.16 : x
  2. Step 2: Convert to fraction form
    19,855.18/27,400.61 = 10,902.16/x
  3. Step 3: Cross multiply
    19,855.18x = 27,400.61 × 10,902.16
  4. Step 4: Simplify right side
    19,855.18x = 298,725,642.80
  5. Step 5: Solve for x
    x = 298,725,642.80/19,855.18
  6. Step 6: Final answer
    x = 15,045.23

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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.