Home / 28,460.79-39,274.94-15,713.76

Finding the Fourth Proportional to 28,460.79, 39,274.94 and 15,713.76

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Solution

The fourth proportional to 28,460.79, 39,274.94 and 15,713.76 is: 21,684.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.79 : 39,274.94 = 15,713.76 : x
  2. Step 2: Convert to fraction form
    28,460.79/39,274.94 = 15,713.76/x
  3. Step 3: Cross multiply
    28,460.79x = 39,274.94 × 15,713.76
  4. Step 4: Simplify right side
    28,460.79x = 617,156,902.61
  5. Step 5: Solve for x
    x = 617,156,902.61/28,460.79
  6. Step 6: Final answer
    x = 21,684.46

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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.