Home / 15,699.80-21,666.14-8,626.41

Finding the Fourth Proportional to 15,699.80, 21,666.14 and 8,626.41

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Solution

The fourth proportional to 15,699.80, 21,666.14 and 8,626.41 is: 11,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.80 : 21,666.14 = 8,626.41 : x
  2. Step 2: Convert to fraction form
    15,699.80/21,666.14 = 8,626.41/x
  3. Step 3: Cross multiply
    15,699.80x = 21,666.14 × 8,626.41
  4. Step 4: Simplify right side
    15,699.80x = 186,900,963.63
  5. Step 5: Solve for x
    x = 186,900,963.63/15,699.80
  6. Step 6: Final answer
    x = 11,904.68

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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.