Home / 28,319.69-39,083.10-18,743.06

Finding the Fourth Proportional to 28,319.69, 39,083.10 and 18,743.06

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Solution

The fourth proportional to 28,319.69, 39,083.10 and 18,743.06 is: 25,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.69 : 39,083.10 = 18,743.06 : x
  2. Step 2: Convert to fraction form
    28,319.69/39,083.10 = 18,743.06/x
  3. Step 3: Cross multiply
    28,319.69x = 39,083.10 × 18,743.06
  4. Step 4: Simplify right side
    28,319.69x = 732,536,888.29
  5. Step 5: Solve for x
    x = 732,536,888.29/28,319.69
  6. Step 6: Final answer
    x = 25,866.70

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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.