Home / 15,402.24-21,253.59-8,687.07

Finding the Fourth Proportional to 15,402.24, 21,253.59 and 8,687.07

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Solution

The fourth proportional to 15,402.24, 21,253.59 and 8,687.07 is: 11,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402.24 : 21,253.59 = 8,687.07 : x
  2. Step 2: Convert to fraction form
    15,402.24/21,253.59 = 8,687.07/x
  3. Step 3: Cross multiply
    15,402.24x = 21,253.59 × 8,687.07
  4. Step 4: Simplify right side
    15,402.24x = 184,631,424.08
  5. Step 5: Solve for x
    x = 184,631,424.08/15,402.24
  6. Step 6: Final answer
    x = 11,987.31

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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.