Home / 19,038.72-28,565.76-8,655.36

Finding the Fourth Proportional to 19,038.72, 28,565.76 and 8,655.36

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Solution

The fourth proportional to 19,038.72, 28,565.76 and 8,655.36 is: 12,986.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,038.72 : 28,565.76 = 8,655.36 : x
  2. Step 2: Convert to fraction form
    19,038.72/28,565.76 = 8,655.36/x
  3. Step 3: Cross multiply
    19,038.72x = 28,565.76 × 8,655.36
  4. Step 4: Simplify right side
    19,038.72x = 247,246,936.47
  5. Step 5: Solve for x
    x = 247,246,936.47/19,038.72
  6. Step 6: Final answer
    x = 12,986.53

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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.