Home / 15,739.01-21,721.06-8,666.70

Finding the Fourth Proportional to 15,739.01, 21,721.06 and 8,666.70

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Solution

The fourth proportional to 15,739.01, 21,721.06 and 8,666.70 is: 11,960.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.01 : 21,721.06 = 8,666.70 : x
  2. Step 2: Convert to fraction form
    15,739.01/21,721.06 = 8,666.70/x
  3. Step 3: Cross multiply
    15,739.01x = 21,721.06 × 8,666.70
  4. Step 4: Simplify right side
    15,739.01x = 188,249,910.70
  5. Step 5: Solve for x
    x = 188,249,910.70/15,739.01
  6. Step 6: Final answer
    x = 11,960.72

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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.