Home / 15,440.02-21,307.21-8,366.45

Finding the Fourth Proportional to 15,440.02, 21,307.21 and 8,366.45

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Solution

The fourth proportional to 15,440.02, 21,307.21 and 8,366.45 is: 11,545.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.02 : 21,307.21 = 8,366.45 : x
  2. Step 2: Convert to fraction form
    15,440.02/21,307.21 = 8,366.45/x
  3. Step 3: Cross multiply
    15,440.02x = 21,307.21 × 8,366.45
  4. Step 4: Simplify right side
    15,440.02x = 178,265,579.65
  5. Step 5: Solve for x
    x = 178,265,579.65/15,440.02
  6. Step 6: Final answer
    x = 11,545.69

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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.