Home / 18,977.90-28,461.93-5,647.76

Finding the Fourth Proportional to 18,977.90, 28,461.93 and 5,647.76

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Solution

The fourth proportional to 18,977.90, 28,461.93 and 5,647.76 is: 8,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.90 : 28,461.93 = 5,647.76 : x
  2. Step 2: Convert to fraction form
    18,977.90/28,461.93 = 5,647.76/x
  3. Step 3: Cross multiply
    18,977.90x = 28,461.93 × 5,647.76
  4. Step 4: Simplify right side
    18,977.90x = 160,746,124.79
  5. Step 5: Solve for x
    x = 160,746,124.79/18,977.90
  6. Step 6: Final answer
    x = 8,470.18

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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.