Home / 21,191.49-29,223.81-14,018.13

Finding the Fourth Proportional to 21,191.49, 29,223.81 and 14,018.13

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Solution

The fourth proportional to 21,191.49, 29,223.81 and 14,018.13 is: 19,331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.49 : 29,223.81 = 14,018.13 : x
  2. Step 2: Convert to fraction form
    21,191.49/29,223.81 = 14,018.13/x
  3. Step 3: Cross multiply
    21,191.49x = 29,223.81 × 14,018.13
  4. Step 4: Simplify right side
    21,191.49x = 409,663,167.68
  5. Step 5: Solve for x
    x = 409,663,167.68/21,191.49
  6. Step 6: Final answer
    x = 19,331.49

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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.