Home / 15,812.90-21,826.39-9,103.26

Finding the Fourth Proportional to 15,812.90, 21,826.39 and 9,103.26

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Solution

The fourth proportional to 15,812.90, 21,826.39 and 9,103.26 is: 12,565.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.90 : 21,826.39 = 9,103.26 : x
  2. Step 2: Convert to fraction form
    15,812.90/21,826.39 = 9,103.26/x
  3. Step 3: Cross multiply
    15,812.90x = 21,826.39 × 9,103.26
  4. Step 4: Simplify right side
    15,812.90x = 198,691,303.03
  5. Step 5: Solve for x
    x = 198,691,303.03/15,812.90
  6. Step 6: Final answer
    x = 12,565.14

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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.