Home / 15,485.10-21,366.36-9,112.02

Finding the Fourth Proportional to 15,485.10, 21,366.36 and 9,112.02

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Solution

The fourth proportional to 15,485.10, 21,366.36 and 9,112.02 is: 12,572.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.10 : 21,366.36 = 9,112.02 : x
  2. Step 2: Convert to fraction form
    15,485.10/21,366.36 = 9,112.02/x
  3. Step 3: Cross multiply
    15,485.10x = 21,366.36 × 9,112.02
  4. Step 4: Simplify right side
    15,485.10x = 194,690,699.65
  5. Step 5: Solve for x
    x = 194,690,699.65/15,485.10
  6. Step 6: Final answer
    x = 12,572.78

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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.