Home / 28,815.23-39,759-17,490.66

Finding the Fourth Proportional to 28,815.23, 39,759 and 17,490.66

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Solution

The fourth proportional to 28,815.23, 39,759 and 17,490.66 is: 24,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.23 : 39,759 = 17,490.66 : x
  2. Step 2: Convert to fraction form
    28,815.23/39,759 = 17,490.66/x
  3. Step 3: Cross multiply
    28,815.23x = 39,759 × 17,490.66
  4. Step 4: Simplify right side
    28,815.23x = 695,411,150.94
  5. Step 5: Solve for x
    x = 695,411,150.94/28,815.23
  6. Step 6: Final answer
    x = 24,133.46

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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.