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Finding the Fourth Proportional to 15,437.57, 21,303.84 and 8,363.99

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Solution

The fourth proportional to 15,437.57, 21,303.84 and 8,363.99 is: 11,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,437.57 : 21,303.84 = 8,363.99 : x
  2. Step 2: Convert to fraction form
    15,437.57/21,303.84 = 8,363.99/x
  3. Step 3: Cross multiply
    15,437.57x = 21,303.84 × 8,363.99
  4. Step 4: Simplify right side
    15,437.57x = 178,184,998.20
  5. Step 5: Solve for x
    x = 178,184,998.20/15,437.57
  6. Step 6: Final answer
    x = 11,542.30

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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.