Home / 15,364.15-21,201.16-8,557.65

Finding the Fourth Proportional to 15,364.15, 21,201.16 and 8,557.65

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Solution

The fourth proportional to 15,364.15, 21,201.16 and 8,557.65 is: 11,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,364.15 : 21,201.16 = 8,557.65 : x
  2. Step 2: Convert to fraction form
    15,364.15/21,201.16 = 8,557.65/x
  3. Step 3: Cross multiply
    15,364.15x = 21,201.16 × 8,557.65
  4. Step 4: Simplify right side
    15,364.15x = 181,432,106.87
  5. Step 5: Solve for x
    x = 181,432,106.87/15,364.15
  6. Step 6: Final answer
    x = 11,808.80

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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.