Home / 15,655.34-21,611.13-9,366.50

Finding the Fourth Proportional to 15,655.34, 21,611.13 and 9,366.50

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Solution

The fourth proportional to 15,655.34, 21,611.13 and 9,366.50 is: 12,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.34 : 21,611.13 = 9,366.50 : x
  2. Step 2: Convert to fraction form
    15,655.34/21,611.13 = 9,366.50/x
  3. Step 3: Cross multiply
    15,655.34x = 21,611.13 × 9,366.50
  4. Step 4: Simplify right side
    15,655.34x = 202,420,649.15
  5. Step 5: Solve for x
    x = 202,420,649.15/15,655.34
  6. Step 6: Final answer
    x = 12,929.81

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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.