Home / 15,322.56-21,145.10-8,953.53

Finding the Fourth Proportional to 15,322.56, 21,145.10 and 8,953.53

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Solution

The fourth proportional to 15,322.56, 21,145.10 and 8,953.53 is: 12,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.56 : 21,145.10 = 8,953.53 : x
  2. Step 2: Convert to fraction form
    15,322.56/21,145.10 = 8,953.53/x
  3. Step 3: Cross multiply
    15,322.56x = 21,145.10 × 8,953.53
  4. Step 4: Simplify right side
    15,322.56x = 189,323,242.44
  5. Step 5: Solve for x
    x = 189,323,242.44/15,322.56
  6. Step 6: Final answer
    x = 12,355.85

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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.