Home / 28,923.10-43,384.65-21,147.10

Finding the Fourth Proportional to 28,923.10, 43,384.65 and 21,147.10

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Solution

The fourth proportional to 28,923.10, 43,384.65 and 21,147.10 is: 31,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,923.10 : 43,384.65 = 21,147.10 : x
  2. Step 2: Convert to fraction form
    28,923.10/43,384.65 = 21,147.10/x
  3. Step 3: Cross multiply
    28,923.10x = 43,384.65 × 21,147.10
  4. Step 4: Simplify right side
    28,923.10x = 917,459,532.02
  5. Step 5: Solve for x
    x = 917,459,532.02/28,923.10
  6. Step 6: Final answer
    x = 31,720.65

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Similar ratio
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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.