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Finding the Fourth Proportional to 15,798.57, 21,800.52 and 9,427.11

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Solution

The fourth proportional to 15,798.57, 21,800.52 and 9,427.11 is: 13,008.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798.57 : 21,800.52 = 9,427.11 : x
  2. Step 2: Convert to fraction form
    15,798.57/21,800.52 = 9,427.11/x
  3. Step 3: Cross multiply
    15,798.57x = 21,800.52 × 9,427.11
  4. Step 4: Simplify right side
    15,798.57x = 205,515,900.10
  5. Step 5: Solve for x
    x = 205,515,900.10/15,798.57
  6. Step 6: Final answer
    x = 13,008.51

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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.