Home / 15,247.02-21,032.42-8,872.90

Finding the Fourth Proportional to 15,247.02, 21,032.42 and 8,872.90

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Solution

The fourth proportional to 15,247.02, 21,032.42 and 8,872.90 is: 12,239.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,247.02 : 21,032.42 = 8,872.90 : x
  2. Step 2: Convert to fraction form
    15,247.02/21,032.42 = 8,872.90/x
  3. Step 3: Cross multiply
    15,247.02x = 21,032.42 × 8,872.90
  4. Step 4: Simplify right side
    15,247.02x = 186,618,559.42
  5. Step 5: Solve for x
    x = 186,618,559.42/15,247.02
  6. Step 6: Final answer
    x = 12,239.67

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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.