Home / 15,439.90-21,307.08-8,366.26

Finding the Fourth Proportional to 15,439.90, 21,307.08 and 8,366.26

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Solution

The fourth proportional to 15,439.90, 21,307.08 and 8,366.26 is: 11,545.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.90 : 21,307.08 = 8,366.26 : x
  2. Step 2: Convert to fraction form
    15,439.90/21,307.08 = 8,366.26/x
  3. Step 3: Cross multiply
    15,439.90x = 21,307.08 × 8,366.26
  4. Step 4: Simplify right side
    15,439.90x = 178,260,571.12
  5. Step 5: Solve for x
    x = 178,260,571.12/15,439.90
  6. Step 6: Final answer
    x = 11,545.45

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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.