Home / 19,695.23-27,178.56-10,742.78

Finding the Fourth Proportional to 19,695.23, 27,178.56 and 10,742.78

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Solution

The fourth proportional to 19,695.23, 27,178.56 and 10,742.78 is: 14,824.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,695.23 : 27,178.56 = 10,742.78 : x
  2. Step 2: Convert to fraction form
    19,695.23/27,178.56 = 10,742.78/x
  3. Step 3: Cross multiply
    19,695.23x = 27,178.56 × 10,742.78
  4. Step 4: Simplify right side
    19,695.23x = 291,973,290.80
  5. Step 5: Solve for x
    x = 291,973,290.80/19,695.23
  6. Step 6: Final answer
    x = 14,824.57

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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.