Home / 15,628.31-21,567.17-8,913.87

Finding the Fourth Proportional to 15,628.31, 21,567.17 and 8,913.87

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Solution

The fourth proportional to 15,628.31, 21,567.17 and 8,913.87 is: 12,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.31 : 21,567.17 = 8,913.87 : x
  2. Step 2: Convert to fraction form
    15,628.31/21,567.17 = 8,913.87/x
  3. Step 3: Cross multiply
    15,628.31x = 21,567.17 × 8,913.87
  4. Step 4: Simplify right side
    15,628.31x = 192,246,971.93
  5. Step 5: Solve for x
    x = 192,246,971.93/15,628.31
  6. Step 6: Final answer
    x = 12,301.20

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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.