Home / 28,085.06-42,135.34-12,287.22

Finding the Fourth Proportional to 28,085.06, 42,135.34 and 12,287.22

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Solution

The fourth proportional to 28,085.06, 42,135.34 and 12,287.22 is: 18,434.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.06 : 42,135.34 = 12,287.22 : x
  2. Step 2: Convert to fraction form
    28,085.06/42,135.34 = 12,287.22/x
  3. Step 3: Cross multiply
    28,085.06x = 42,135.34 × 12,287.22
  4. Step 4: Simplify right side
    28,085.06x = 517,726,192.35
  5. Step 5: Solve for x
    x = 517,726,192.35/28,085.06
  6. Step 6: Final answer
    x = 18,434.22

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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.