Home / 30,877.20-46,315.80-18,411.30

Finding the Fourth Proportional to 30,877.20, 46,315.80 and 18,411.30

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Solution

The fourth proportional to 30,877.20, 46,315.80 and 18,411.30 is: 27,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,877.20 : 46,315.80 = 18,411.30 : x
  2. Step 2: Convert to fraction form
    30,877.20/46,315.80 = 18,411.30/x
  3. Step 3: Cross multiply
    30,877.20x = 46,315.80 × 18,411.30
  4. Step 4: Simplify right side
    30,877.20x = 852,734,088.54
  5. Step 5: Solve for x
    x = 852,734,088.54/30,877.20
  6. Step 6: Final answer
    x = 27,616.95

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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.