Home / 30,569.07-42,151.41-21,601.16

Finding the Fourth Proportional to 30,569.07, 42,151.41 and 21,601.16

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Solution

The fourth proportional to 30,569.07, 42,151.41 and 21,601.16 is: 29,785.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,569.07 : 42,151.41 = 21,601.16 : x
  2. Step 2: Convert to fraction form
    30,569.07/42,151.41 = 21,601.16/x
  3. Step 3: Cross multiply
    30,569.07x = 42,151.41 × 21,601.16
  4. Step 4: Simplify right side
    30,569.07x = 910,519,140.88
  5. Step 5: Solve for x
    x = 910,519,140.88/30,569.07
  6. Step 6: Final answer
    x = 29,785.63

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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.