Home / 10,121.64-13,966.47-5,644.77

Finding the Fourth Proportional to 10,121.64, 13,966.47 and 5,644.77

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Solution

The fourth proportional to 10,121.64, 13,966.47 and 5,644.77 is: 7,789.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.64 : 13,966.47 = 5,644.77 : x
  2. Step 2: Convert to fraction form
    10,121.64/13,966.47 = 5,644.77/x
  3. Step 3: Cross multiply
    10,121.64x = 13,966.47 × 5,644.77
  4. Step 4: Simplify right side
    10,121.64x = 78,837,510.86
  5. Step 5: Solve for x
    x = 78,837,510.86/10,121.64
  6. Step 6: Final answer
    x = 7,789.01

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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.