Home / 28,622.34-39,499.17-15,875.79

Finding the Fourth Proportional to 28,622.34, 39,499.17 and 15,875.79

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Solution

The fourth proportional to 28,622.34, 39,499.17 and 15,875.79 is: 21,908.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,622.34 : 39,499.17 = 15,875.79 : x
  2. Step 2: Convert to fraction form
    28,622.34/39,499.17 = 15,875.79/x
  3. Step 3: Cross multiply
    28,622.34x = 39,499.17 × 15,875.79
  4. Step 4: Simplify right side
    28,622.34x = 627,080,528.09
  5. Step 5: Solve for x
    x = 627,080,528.09/28,622.34
  6. Step 6: Final answer
    x = 21,908.78

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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.