Home / 15,516.77-21,418.02-9,143.03

Finding the Fourth Proportional to 15,516.77, 21,418.02 and 9,143.03

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Solution

The fourth proportional to 15,516.77, 21,418.02 and 9,143.03 is: 12,620.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.77 : 21,418.02 = 9,143.03 : x
  2. Step 2: Convert to fraction form
    15,516.77/21,418.02 = 9,143.03/x
  3. Step 3: Cross multiply
    15,516.77x = 21,418.02 × 9,143.03
  4. Step 4: Simplify right side
    15,516.77x = 195,825,532.47
  5. Step 5: Solve for x
    x = 195,825,532.47/15,516.77
  6. Step 6: Final answer
    x = 12,620.26

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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.