Home / 18,877.91-28,315.04-5,730.40

Finding the Fourth Proportional to 18,877.91, 28,315.04 and 5,730.40

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Solution

The fourth proportional to 18,877.91, 28,315.04 and 5,730.40 is: 8,595.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.91 : 28,315.04 = 5,730.40 : x
  2. Step 2: Convert to fraction form
    18,877.91/28,315.04 = 5,730.40/x
  3. Step 3: Cross multiply
    18,877.91x = 28,315.04 × 5,730.40
  4. Step 4: Simplify right side
    18,877.91x = 162,256,401.04
  5. Step 5: Solve for x
    x = 162,256,401.04/18,877.91
  6. Step 6: Final answer
    x = 8,595.04

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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.