Home / 28,887.10-43,330.65-18,972.70

Finding the Fourth Proportional to 28,887.10, 43,330.65 and 18,972.70

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Solution

The fourth proportional to 28,887.10, 43,330.65 and 18,972.70 is: 28,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.10 : 43,330.65 = 18,972.70 : x
  2. Step 2: Convert to fraction form
    28,887.10/43,330.65 = 18,972.70/x
  3. Step 3: Cross multiply
    28,887.10x = 43,330.65 × 18,972.70
  4. Step 4: Simplify right side
    28,887.10x = 822,099,423.26
  5. Step 5: Solve for x
    x = 822,099,423.26/28,887.10
  6. Step 6: Final answer
    x = 28,459.05

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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.