Home / 15,845.92-21,865.71-9,130.21

Finding the Fourth Proportional to 15,845.92, 21,865.71 and 9,130.21

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Solution

The fourth proportional to 15,845.92, 21,865.71 and 9,130.21 is: 12,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.92 : 21,865.71 = 9,130.21 : x
  2. Step 2: Convert to fraction form
    15,845.92/21,865.71 = 9,130.21/x
  3. Step 3: Cross multiply
    15,845.92x = 21,865.71 × 9,130.21
  4. Step 4: Simplify right side
    15,845.92x = 199,638,524.10
  5. Step 5: Solve for x
    x = 199,638,524.10/15,845.92
  6. Step 6: Final answer
    x = 12,598.73

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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.