Home / 15,868.43-21,903.38-9,820.77

Finding the Fourth Proportional to 15,868.43, 21,903.38 and 9,820.77

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Solution

The fourth proportional to 15,868.43, 21,903.38 and 9,820.77 is: 13,555.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.43 : 21,903.38 = 9,820.77 : x
  2. Step 2: Convert to fraction form
    15,868.43/21,903.38 = 9,820.77/x
  3. Step 3: Cross multiply
    15,868.43x = 21,903.38 × 9,820.77
  4. Step 4: Simplify right side
    15,868.43x = 215,108,057.20
  5. Step 5: Solve for x
    x = 215,108,057.20/15,868.43
  6. Step 6: Final answer
    x = 13,555.72

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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.