Home / 12,555.72-17,326.10-6,889.32

Finding the Fourth Proportional to 12,555.72, 17,326.10 and 6,889.32

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Solution

The fourth proportional to 12,555.72, 17,326.10 and 6,889.32 is: 9,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.72 : 17,326.10 = 6,889.32 : x
  2. Step 2: Convert to fraction form
    12,555.72/17,326.10 = 6,889.32/x
  3. Step 3: Cross multiply
    12,555.72x = 17,326.10 × 6,889.32
  4. Step 4: Simplify right side
    12,555.72x = 119,365,012.81
  5. Step 5: Solve for x
    x = 119,365,012.81/12,555.72
  6. Step 6: Final answer
    x = 9,506.82

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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.