Home / 15,339.13-21,168.75-8,626.87

Finding the Fourth Proportional to 15,339.13, 21,168.75 and 8,626.87

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Solution

The fourth proportional to 15,339.13, 21,168.75 and 8,626.87 is: 11,905.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.13 : 21,168.75 = 8,626.87 : x
  2. Step 2: Convert to fraction form
    15,339.13/21,168.75 = 8,626.87/x
  3. Step 3: Cross multiply
    15,339.13x = 21,168.75 × 8,626.87
  4. Step 4: Simplify right side
    15,339.13x = 182,620,054.31
  5. Step 5: Solve for x
    x = 182,620,054.31/15,339.13
  6. Step 6: Final answer
    x = 11,905.50

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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.