Home / 28,618.52-39,485.48-18,547.38

Finding the Fourth Proportional to 28,618.52, 39,485.48 and 18,547.38

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Solution

The fourth proportional to 28,618.52, 39,485.48 and 18,547.38 is: 25,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618.52 : 39,485.48 = 18,547.38 : x
  2. Step 2: Convert to fraction form
    28,618.52/39,485.48 = 18,547.38/x
  3. Step 3: Cross multiply
    28,618.52x = 39,485.48 × 18,547.38
  4. Step 4: Simplify right side
    28,618.52x = 732,352,109.31
  5. Step 5: Solve for x
    x = 732,352,109.31/28,618.52
  6. Step 6: Final answer
    x = 25,590.15

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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.