Home / 28,274.40-39,017.70-15,698.52

Finding the Fourth Proportional to 28,274.40, 39,017.70 and 15,698.52

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Solution

The fourth proportional to 28,274.40, 39,017.70 and 15,698.52 is: 21,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,274.40 : 39,017.70 = 15,698.52 : x
  2. Step 2: Convert to fraction form
    28,274.40/39,017.70 = 15,698.52/x
  3. Step 3: Cross multiply
    28,274.40x = 39,017.70 × 15,698.52
  4. Step 4: Simplify right side
    28,274.40x = 612,520,143.80
  5. Step 5: Solve for x
    x = 612,520,143.80/28,274.40
  6. Step 6: Final answer
    x = 21,663.42

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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.