Home / 15,543.48-21,450.01-8,469.91

Finding the Fourth Proportional to 15,543.48, 21,450.01 and 8,469.91

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Solution

The fourth proportional to 15,543.48, 21,450.01 and 8,469.91 is: 11,688.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.48 : 21,450.01 = 8,469.91 : x
  2. Step 2: Convert to fraction form
    15,543.48/21,450.01 = 8,469.91/x
  3. Step 3: Cross multiply
    15,543.48x = 21,450.01 × 8,469.91
  4. Step 4: Simplify right side
    15,543.48x = 181,679,579.40
  5. Step 5: Solve for x
    x = 181,679,579.40/15,543.48
  6. Step 6: Final answer
    x = 11,688.48

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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.