Home / 28,343.52-39,106.80-15,765.84

Finding the Fourth Proportional to 28,343.52, 39,106.80 and 15,765.84

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Solution

The fourth proportional to 28,343.52, 39,106.80 and 15,765.84 is: 21,752.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.52 : 39,106.80 = 15,765.84 : x
  2. Step 2: Convert to fraction form
    28,343.52/39,106.80 = 15,765.84/x
  3. Step 3: Cross multiply
    28,343.52x = 39,106.80 × 15,765.84
  4. Step 4: Simplify right side
    28,343.52x = 616,551,551.71
  5. Step 5: Solve for x
    x = 616,551,551.71/28,343.52
  6. Step 6: Final answer
    x = 21,752.82

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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.