Home / 28,425.51-39,227.52-15,679.17

Finding the Fourth Proportional to 28,425.51, 39,227.52 and 15,679.17

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Solution

The fourth proportional to 28,425.51, 39,227.52 and 15,679.17 is: 21,637.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.51 : 39,227.52 = 15,679.17 : x
  2. Step 2: Convert to fraction form
    28,425.51/39,227.52 = 15,679.17/x
  3. Step 3: Cross multiply
    28,425.51x = 39,227.52 × 15,679.17
  4. Step 4: Simplify right side
    28,425.51x = 615,054,954.76
  5. Step 5: Solve for x
    x = 615,054,954.76/28,425.51
  6. Step 6: Final answer
    x = 21,637.43

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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.