Home / 15,367.90-21,205.95-8,653.36

Finding the Fourth Proportional to 15,367.90, 21,205.95 and 8,653.36

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Solution

The fourth proportional to 15,367.90, 21,205.95 and 8,653.36 is: 11,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,367.90 : 21,205.95 = 8,653.36 : x
  2. Step 2: Convert to fraction form
    15,367.90/21,205.95 = 8,653.36/x
  3. Step 3: Cross multiply
    15,367.90x = 21,205.95 × 8,653.36
  4. Step 4: Simplify right side
    15,367.90x = 183,502,719.49
  5. Step 5: Solve for x
    x = 183,502,719.49/15,367.90
  6. Step 6: Final answer
    x = 11,940.65

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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.