Home / 19,257.78-28,887.70-5,407.86

Finding the Fourth Proportional to 19,257.78, 28,887.70 and 5,407.86

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Solution

The fourth proportional to 19,257.78, 28,887.70 and 5,407.86 is: 8,112.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,257.78 : 28,887.70 = 5,407.86 : x
  2. Step 2: Convert to fraction form
    19,257.78/28,887.70 = 5,407.86/x
  3. Step 3: Cross multiply
    19,257.78x = 28,887.70 × 5,407.86
  4. Step 4: Simplify right side
    19,257.78x = 156,220,637.32
  5. Step 5: Solve for x
    x = 156,220,637.32/19,257.78
  6. Step 6: Final answer
    x = 8,112.08

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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.