Home / 19,207.55-28,788.71-8,665.31

Finding the Fourth Proportional to 19,207.55, 28,788.71 and 8,665.31

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Solution

The fourth proportional to 19,207.55, 28,788.71 and 8,665.31 is: 12,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.55 : 28,788.71 = 8,665.31 : x
  2. Step 2: Convert to fraction form
    19,207.55/28,788.71 = 8,665.31/x
  3. Step 3: Cross multiply
    19,207.55x = 28,788.71 × 8,665.31
  4. Step 4: Simplify right side
    19,207.55x = 249,462,909.38
  5. Step 5: Solve for x
    x = 249,462,909.38/19,207.55
  6. Step 6: Final answer
    x = 12,987.76

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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.