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Finding the Fourth Proportional to 15,097.95, 20,830.50 and 8,722.22

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Solution

The fourth proportional to 15,097.95, 20,830.50 and 8,722.22 is: 12,033.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,097.95 : 20,830.50 = 8,722.22 : x
  2. Step 2: Convert to fraction form
    15,097.95/20,830.50 = 8,722.22/x
  3. Step 3: Cross multiply
    15,097.95x = 20,830.50 × 8,722.22
  4. Step 4: Simplify right side
    15,097.95x = 181,688,077.75
  5. Step 5: Solve for x
    x = 181,688,077.75/15,097.95
  6. Step 6: Final answer
    x = 12,033.96

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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.