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Finding the Fourth Proportional to 28,443.40, 42,665.10 and 26,499.40

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Solution

The fourth proportional to 28,443.40, 42,665.10 and 26,499.40 is: 39,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.40 : 42,665.10 = 26,499.40 : x
  2. Step 2: Convert to fraction form
    28,443.40/42,665.10 = 26,499.40/x
  3. Step 3: Cross multiply
    28,443.40x = 42,665.10 × 26,499.40
  4. Step 4: Simplify right side
    28,443.40x = 1,130,599,550.94
  5. Step 5: Solve for x
    x = 1,130,599,550.94/28,443.40
  6. Step 6: Final answer
    x = 39,749.10

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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.