Home / 27,886.04-38,471.76-15,942.96

Finding the Fourth Proportional to 27,886.04, 38,471.76 and 15,942.96

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Solution

The fourth proportional to 27,886.04, 38,471.76 and 15,942.96 is: 21,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,886.04 : 38,471.76 = 15,942.96 : x
  2. Step 2: Convert to fraction form
    27,886.04/38,471.76 = 15,942.96/x
  3. Step 3: Cross multiply
    27,886.04x = 38,471.76 × 15,942.96
  4. Step 4: Simplify right side
    27,886.04x = 613,353,730.81
  5. Step 5: Solve for x
    x = 613,353,730.81/27,886.04
  6. Step 6: Final answer
    x = 21,995.01

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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.