Home / 15,766.83-21,756.69-9,716.13

Finding the Fourth Proportional to 15,766.83, 21,756.69 and 9,716.13

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Solution

The fourth proportional to 15,766.83, 21,756.69 and 9,716.13 is: 13,407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.83 : 21,756.69 = 9,716.13 : x
  2. Step 2: Convert to fraction form
    15,766.83/21,756.69 = 9,716.13/x
  3. Step 3: Cross multiply
    15,766.83x = 21,756.69 × 9,716.13
  4. Step 4: Simplify right side
    15,766.83x = 211,390,828.41
  5. Step 5: Solve for x
    x = 211,390,828.41/15,766.83
  6. Step 6: Final answer
    x = 13,407.31

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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.