Home / 15,439.82-21,307.02-8,366.25

Finding the Fourth Proportional to 15,439.82, 21,307.02 and 8,366.25

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Solution

The fourth proportional to 15,439.82, 21,307.02 and 8,366.25 is: 11,545.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.82 : 21,307.02 = 8,366.25 : x
  2. Step 2: Convert to fraction form
    15,439.82/21,307.02 = 8,366.25/x
  3. Step 3: Cross multiply
    15,439.82x = 21,307.02 × 8,366.25
  4. Step 4: Simplify right side
    15,439.82x = 178,259,856.08
  5. Step 5: Solve for x
    x = 178,259,856.08/15,439.82
  6. Step 6: Final answer
    x = 11,545.47

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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.