Home / 27,686.05-38,210.40-15,747.08

Finding the Fourth Proportional to 27,686.05, 38,210.40 and 15,747.08

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Solution

The fourth proportional to 27,686.05, 38,210.40 and 15,747.08 is: 21,733.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,686.05 : 38,210.40 = 15,747.08 : x
  2. Step 2: Convert to fraction form
    27,686.05/38,210.40 = 15,747.08/x
  3. Step 3: Cross multiply
    27,686.05x = 38,210.40 × 15,747.08
  4. Step 4: Simplify right side
    27,686.05x = 601,702,321.16
  5. Step 5: Solve for x
    x = 601,702,321.16/27,686.05
  6. Step 6: Final answer
    x = 21,733.05

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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.