Home / 15,558.13-21,469.89-8,484.40

Finding the Fourth Proportional to 15,558.13, 21,469.89 and 8,484.40

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Solution

The fourth proportional to 15,558.13, 21,469.89 and 8,484.40 is: 11,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.13 : 21,469.89 = 8,484.40 : x
  2. Step 2: Convert to fraction form
    15,558.13/21,469.89 = 8,484.40/x
  3. Step 3: Cross multiply
    15,558.13x = 21,469.89 × 8,484.40
  4. Step 4: Simplify right side
    15,558.13x = 182,159,134.72
  5. Step 5: Solve for x
    x = 182,159,134.72/15,558.13
  6. Step 6: Final answer
    x = 11,708.29

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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.