Home / 15,085.47-20,817.21-8,370.57

Finding the Fourth Proportional to 15,085.47, 20,817.21 and 8,370.57

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Solution

The fourth proportional to 15,085.47, 20,817.21 and 8,370.57 is: 11,550.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.47 : 20,817.21 = 8,370.57 : x
  2. Step 2: Convert to fraction form
    15,085.47/20,817.21 = 8,370.57/x
  3. Step 3: Cross multiply
    15,085.47x = 20,817.21 × 8,370.57
  4. Step 4: Simplify right side
    15,085.47x = 174,251,913.51
  5. Step 5: Solve for x
    x = 174,251,913.51/15,085.47
  6. Step 6: Final answer
    x = 11,550.98

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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.