Home / 27,706.40-38,236.78-15,769.74

Finding the Fourth Proportional to 27,706.40, 38,236.78 and 15,769.74

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Solution

The fourth proportional to 27,706.40, 38,236.78 and 15,769.74 is: 21,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,706.40 : 38,236.78 = 15,769.74 : x
  2. Step 2: Convert to fraction form
    27,706.40/38,236.78 = 15,769.74/x
  3. Step 3: Cross multiply
    27,706.40x = 38,236.78 × 15,769.74
  4. Step 4: Simplify right side
    27,706.40x = 602,983,886.17
  5. Step 5: Solve for x
    x = 602,983,886.17/27,706.40
  6. Step 6: Final answer
    x = 21,763.34

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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.