Home / 28,329.16-42,514.06-18,987

Finding the Fourth Proportional to 28,329.16, 42,514.06 and 18,987

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Solution

The fourth proportional to 28,329.16, 42,514.06 and 18,987 is: 28,494.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.16 : 42,514.06 = 18,987 : x
  2. Step 2: Convert to fraction form
    28,329.16/42,514.06 = 18,987/x
  3. Step 3: Cross multiply
    28,329.16x = 42,514.06 × 18,987
  4. Step 4: Simplify right side
    28,329.16x = 807,214,457.22
  5. Step 5: Solve for x
    x = 807,214,457.22/28,329.16
  6. Step 6: Final answer
    x = 28,494.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.