Home / 15,308.17-21,131.75-9,341.98

Finding the Fourth Proportional to 15,308.17, 21,131.75 and 9,341.98

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Solution

The fourth proportional to 15,308.17, 21,131.75 and 9,341.98 is: 12,895.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,308.17 : 21,131.75 = 9,341.98 : x
  2. Step 2: Convert to fraction form
    15,308.17/21,131.75 = 9,341.98/x
  3. Step 3: Cross multiply
    15,308.17x = 21,131.75 × 9,341.98
  4. Step 4: Simplify right side
    15,308.17x = 197,412,385.87
  5. Step 5: Solve for x
    x = 197,412,385.87/15,308.17
  6. Step 6: Final answer
    x = 12,895.88

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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.