Home / 34,400.57-47,477.98-20,979.61

Finding the Fourth Proportional to 34,400.57, 47,477.98 and 20,979.61

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Solution

The fourth proportional to 34,400.57, 47,477.98 and 20,979.61 is: 28,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,400.57 : 47,477.98 = 20,979.61 : x
  2. Step 2: Convert to fraction form
    34,400.57/47,477.98 = 20,979.61/x
  3. Step 3: Cross multiply
    34,400.57x = 47,477.98 × 20,979.61
  4. Step 4: Simplify right side
    34,400.57x = 996,069,399.09
  5. Step 5: Solve for x
    x = 996,069,399.09/34,400.57
  6. Step 6: Final answer
    x = 28,955.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.