Home / 15,594.89-21,520.86-8,521.31

Finding the Fourth Proportional to 15,594.89, 21,520.86 and 8,521.31

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Solution

The fourth proportional to 15,594.89, 21,520.86 and 8,521.31 is: 11,759.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,594.89 : 21,520.86 = 8,521.31 : x
  2. Step 2: Convert to fraction form
    15,594.89/21,520.86 = 8,521.31/x
  3. Step 3: Cross multiply
    15,594.89x = 21,520.86 × 8,521.31
  4. Step 4: Simplify right side
    15,594.89x = 183,385,919.53
  5. Step 5: Solve for x
    x = 183,385,919.53/15,594.89
  6. Step 6: Final answer
    x = 11,759.36

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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.