Home / 15,509.06-21,402.72-8,435.50

Finding the Fourth Proportional to 15,509.06, 21,402.72 and 8,435.50

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Solution

The fourth proportional to 15,509.06, 21,402.72 and 8,435.50 is: 11,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.06 : 21,402.72 = 8,435.50 : x
  2. Step 2: Convert to fraction form
    15,509.06/21,402.72 = 8,435.50/x
  3. Step 3: Cross multiply
    15,509.06x = 21,402.72 × 8,435.50
  4. Step 4: Simplify right side
    15,509.06x = 180,542,644.56
  5. Step 5: Solve for x
    x = 180,542,644.56/15,509.06
  6. Step 6: Final answer
    x = 11,641.11

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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.