Home / 19,117.56-28,665.38-7,417.12

Finding the Fourth Proportional to 19,117.56, 28,665.38 and 7,417.12

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Solution

The fourth proportional to 19,117.56, 28,665.38 and 7,417.12 is: 11,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.56 : 28,665.38 = 7,417.12 : x
  2. Step 2: Convert to fraction form
    19,117.56/28,665.38 = 7,417.12/x
  3. Step 3: Cross multiply
    19,117.56x = 28,665.38 × 7,417.12
  4. Step 4: Simplify right side
    19,117.56x = 212,614,563.31
  5. Step 5: Solve for x
    x = 212,614,563.31/19,117.56
  6. Step 6: Final answer
    x = 11,121.43

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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.