Home / 12,512.51-18,752.80-6,886.47

Finding the Fourth Proportional to 12,512.51, 18,752.80 and 6,886.47

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Solution

The fourth proportional to 12,512.51, 18,752.80 and 6,886.47 is: 10,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.51 : 18,752.80 = 6,886.47 : x
  2. Step 2: Convert to fraction form
    12,512.51/18,752.80 = 6,886.47/x
  3. Step 3: Cross multiply
    12,512.51x = 18,752.80 × 6,886.47
  4. Step 4: Simplify right side
    12,512.51x = 129,140,594.62
  5. Step 5: Solve for x
    x = 129,140,594.62/12,512.51
  6. Step 6: Final answer
    x = 10,320.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.