Home / 19,021.49-28,542.18-7,785.17

Finding the Fourth Proportional to 19,021.49, 28,542.18 and 7,785.17

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Solution

The fourth proportional to 19,021.49, 28,542.18 and 7,785.17 is: 11,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.49 : 28,542.18 = 7,785.17 : x
  2. Step 2: Convert to fraction form
    19,021.49/28,542.18 = 7,785.17/x
  3. Step 3: Cross multiply
    19,021.49x = 28,542.18 × 7,785.17
  4. Step 4: Simplify right side
    19,021.49x = 222,205,541.83
  5. Step 5: Solve for x
    x = 222,205,541.83/19,021.49
  6. Step 6: Final answer
    x = 11,681.82

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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.