Home / 28,686.16-43,018.60-9,961.19

Finding the Fourth Proportional to 28,686.16, 43,018.60 and 9,961.19

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Solution

The fourth proportional to 28,686.16, 43,018.60 and 9,961.19 is: 14,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.16 : 43,018.60 = 9,961.19 : x
  2. Step 2: Convert to fraction form
    28,686.16/43,018.60 = 9,961.19/x
  3. Step 3: Cross multiply
    28,686.16x = 43,018.60 × 9,961.19
  4. Step 4: Simplify right side
    28,686.16x = 428,516,448.13
  5. Step 5: Solve for x
    x = 428,516,448.13/28,686.16
  6. Step 6: Final answer
    x = 14,938.09

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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.