Home / 27,870.67-38,460.18-15,935.32

Finding the Fourth Proportional to 27,870.67, 38,460.18 and 15,935.32

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Solution

The fourth proportional to 27,870.67, 38,460.18 and 15,935.32 is: 21,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.67 : 38,460.18 = 15,935.32 : x
  2. Step 2: Convert to fraction form
    27,870.67/38,460.18 = 15,935.32/x
  3. Step 3: Cross multiply
    27,870.67x = 38,460.18 × 15,935.32
  4. Step 4: Simplify right side
    27,870.67x = 612,875,275.56
  5. Step 5: Solve for x
    x = 612,875,275.56/27,870.67
  6. Step 6: Final answer
    x = 21,989.97

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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.