Home / 15,538.98-21,443.76-8,465.39

Finding the Fourth Proportional to 15,538.98, 21,443.76 and 8,465.39

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Solution

The fourth proportional to 15,538.98, 21,443.76 and 8,465.39 is: 11,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.98 : 21,443.76 = 8,465.39 : x
  2. Step 2: Convert to fraction form
    15,538.98/21,443.76 = 8,465.39/x
  3. Step 3: Cross multiply
    15,538.98x = 21,443.76 × 8,465.39
  4. Step 4: Simplify right side
    15,538.98x = 181,529,684.25
  5. Step 5: Solve for x
    x = 181,529,684.25/15,538.98
  6. Step 6: Final answer
    x = 11,682.21

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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.