Home / 15,558.89-21,470.54-9,591.12

Finding the Fourth Proportional to 15,558.89, 21,470.54 and 9,591.12

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Solution

The fourth proportional to 15,558.89, 21,470.54 and 9,591.12 is: 13,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.89 : 21,470.54 = 9,591.12 : x
  2. Step 2: Convert to fraction form
    15,558.89/21,470.54 = 9,591.12/x
  3. Step 3: Cross multiply
    15,558.89x = 21,470.54 × 9,591.12
  4. Step 4: Simplify right side
    15,558.89x = 205,926,477.65
  5. Step 5: Solve for x
    x = 205,926,477.65/15,558.89
  6. Step 6: Final answer
    x = 13,235.30

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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.