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Finding the Fourth Proportional to 26,479.80, 39,719.70 and 25,313.40

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Solution

The fourth proportional to 26,479.80, 39,719.70 and 25,313.40 is: 37,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,479.80 : 39,719.70 = 25,313.40 : x
  2. Step 2: Convert to fraction form
    26,479.80/39,719.70 = 25,313.40/x
  3. Step 3: Cross multiply
    26,479.80x = 39,719.70 × 25,313.40
  4. Step 4: Simplify right side
    26,479.80x = 1,005,440,653.98
  5. Step 5: Solve for x
    x = 1,005,440,653.98/26,479.80
  6. Step 6: Final answer
    x = 37,970.10

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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.