Home / 12,587.50-17,370.75-6,998.50

Finding the Fourth Proportional to 12,587.50, 17,370.75 and 6,998.50

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Solution

The fourth proportional to 12,587.50, 17,370.75 and 6,998.50 is: 9,657.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.50 : 17,370.75 = 6,998.50 : x
  2. Step 2: Convert to fraction form
    12,587.50/17,370.75 = 6,998.50/x
  3. Step 3: Cross multiply
    12,587.50x = 17,370.75 × 6,998.50
  4. Step 4: Simplify right side
    12,587.50x = 121,569,193.88
  5. Step 5: Solve for x
    x = 121,569,193.88/12,587.50
  6. Step 6: Final answer
    x = 9,657.93

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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.