Home / 34,979.49-48,271.95-20,639.61

Finding the Fourth Proportional to 34,979.49, 48,271.95 and 20,639.61

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Solution

The fourth proportional to 34,979.49, 48,271.95 and 20,639.61 is: 28,482.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,979.49 : 48,271.95 = 20,639.61 : x
  2. Step 2: Convert to fraction form
    34,979.49/48,271.95 = 20,639.61/x
  3. Step 3: Cross multiply
    34,979.49x = 48,271.95 × 20,639.61
  4. Step 4: Simplify right side
    34,979.49x = 996,314,221.94
  5. Step 5: Solve for x
    x = 996,314,221.94/34,979.49
  6. Step 6: Final answer
    x = 28,482.81

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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.