Home / 28,483.88-39,275.75-18,399.02

Finding the Fourth Proportional to 28,483.88, 39,275.75 and 18,399.02

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Solution

The fourth proportional to 28,483.88, 39,275.75 and 18,399.02 is: 25,369.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.88 : 39,275.75 = 18,399.02 : x
  2. Step 2: Convert to fraction form
    28,483.88/39,275.75 = 18,399.02/x
  3. Step 3: Cross multiply
    28,483.88x = 39,275.75 × 18,399.02
  4. Step 4: Simplify right side
    28,483.88x = 722,635,159.38
  5. Step 5: Solve for x
    x = 722,635,159.38/28,483.88
  6. Step 6: Final answer
    x = 25,369.97

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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.