Home / 12,558.65-17,331.30-7,181.99

Finding the Fourth Proportional to 12,558.65, 17,331.30 and 7,181.99

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Solution

The fourth proportional to 12,558.65, 17,331.30 and 7,181.99 is: 9,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.65 : 17,331.30 = 7,181.99 : x
  2. Step 2: Convert to fraction form
    12,558.65/17,331.30 = 7,181.99/x
  3. Step 3: Cross multiply
    12,558.65x = 17,331.30 × 7,181.99
  4. Step 4: Simplify right side
    12,558.65x = 124,473,223.29
  5. Step 5: Solve for x
    x = 124,473,223.29/12,558.65
  6. Step 6: Final answer
    x = 9,911.35

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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.