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Finding the Fourth Proportional to 28,916.40, 43,288.20 and 25,460.40

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Solution

The fourth proportional to 28,916.40, 43,288.20 and 25,460.40 is: 38,114.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.40 : 43,288.20 = 25,460.40 : x
  2. Step 2: Convert to fraction form
    28,916.40/43,288.20 = 25,460.40/x
  3. Step 3: Cross multiply
    28,916.40x = 43,288.20 × 25,460.40
  4. Step 4: Simplify right side
    28,916.40x = 1,102,134,887.28
  5. Step 5: Solve for x
    x = 1,102,134,887.28/28,916.40
  6. Step 6: Final answer
    x = 38,114.53

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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.