Home / 15,788.93-21,790.25-11,803.13

Finding the Fourth Proportional to 15,788.93, 21,790.25 and 11,803.13

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Solution

The fourth proportional to 15,788.93, 21,790.25 and 11,803.13 is: 16,289.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.93 : 21,790.25 = 11,803.13 : x
  2. Step 2: Convert to fraction form
    15,788.93/21,790.25 = 11,803.13/x
  3. Step 3: Cross multiply
    15,788.93x = 21,790.25 × 11,803.13
  4. Step 4: Simplify right side
    15,788.93x = 257,192,985.52
  5. Step 5: Solve for x
    x = 257,192,985.52/15,788.93
  6. Step 6: Final answer
    x = 16,289.46

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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.