Home / 28,943.10-43,459.20-15,821.10

Finding the Fourth Proportional to 28,943.10, 43,459.20 and 15,821.10

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Solution

The fourth proportional to 28,943.10, 43,459.20 and 15,821.10 is: 23,756.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943.10 : 43,459.20 = 15,821.10 : x
  2. Step 2: Convert to fraction form
    28,943.10/43,459.20 = 15,821.10/x
  3. Step 3: Cross multiply
    28,943.10x = 43,459.20 × 15,821.10
  4. Step 4: Simplify right side
    28,943.10x = 687,572,349.12
  5. Step 5: Solve for x
    x = 687,572,349.12/28,943.10
  6. Step 6: Final answer
    x = 23,756.00

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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.