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Finding the Fourth Proportional to 15,810.90, 21,823.63 and 9,101.26

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Solution

The fourth proportional to 15,810.90, 21,823.63 and 9,101.26 is: 12,562.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.90 : 21,823.63 = 9,101.26 : x
  2. Step 2: Convert to fraction form
    15,810.90/21,823.63 = 9,101.26/x
  3. Step 3: Cross multiply
    15,810.90x = 21,823.63 × 9,101.26
  4. Step 4: Simplify right side
    15,810.90x = 198,622,535.30
  5. Step 5: Solve for x
    x = 198,622,535.30/15,810.90
  6. Step 6: Final answer
    x = 12,562.38

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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.