Home / 15,380.66-21,225.32-8,307.08

Finding the Fourth Proportional to 15,380.66, 21,225.32 and 8,307.08

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Solution

The fourth proportional to 15,380.66, 21,225.32 and 8,307.08 is: 11,463.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.66 : 21,225.32 = 8,307.08 : x
  2. Step 2: Convert to fraction form
    15,380.66/21,225.32 = 8,307.08/x
  3. Step 3: Cross multiply
    15,380.66x = 21,225.32 × 8,307.08
  4. Step 4: Simplify right side
    15,380.66x = 176,320,283.60
  5. Step 5: Solve for x
    x = 176,320,283.60/15,380.66
  6. Step 6: Final answer
    x = 11,463.77

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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.