Home / 15,656.85-21,607.33-9,287.21

Finding the Fourth Proportional to 15,656.85, 21,607.33 and 9,287.21

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Solution

The fourth proportional to 15,656.85, 21,607.33 and 9,287.21 is: 12,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.85 : 21,607.33 = 9,287.21 : x
  2. Step 2: Convert to fraction form
    15,656.85/21,607.33 = 9,287.21/x
  3. Step 3: Cross multiply
    15,656.85x = 21,607.33 × 9,287.21
  4. Step 4: Simplify right side
    15,656.85x = 200,671,811.25
  5. Step 5: Solve for x
    x = 200,671,811.25/15,656.85
  6. Step 6: Final answer
    x = 12,816.87

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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.