Home / 19,237.10-28,855.65-8,140.10

Finding the Fourth Proportional to 19,237.10, 28,855.65 and 8,140.10

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Solution

The fourth proportional to 19,237.10, 28,855.65 and 8,140.10 is: 12,210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,237.10 : 28,855.65 = 8,140.10 : x
  2. Step 2: Convert to fraction form
    19,237.10/28,855.65 = 8,140.10/x
  3. Step 3: Cross multiply
    19,237.10x = 28,855.65 × 8,140.10
  4. Step 4: Simplify right side
    19,237.10x = 234,887,876.57
  5. Step 5: Solve for x
    x = 234,887,876.57/19,237.10
  6. Step 6: Final answer
    x = 12,210.15

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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.