Home / 21,190.47-29,156.49-19,440.87

Finding the Fourth Proportional to 21,190.47, 29,156.49 and 19,440.87

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Solution

The fourth proportional to 21,190.47, 29,156.49 and 19,440.87 is: 26,749.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.47 : 29,156.49 = 19,440.87 : x
  2. Step 2: Convert to fraction form
    21,190.47/29,156.49 = 19,440.87/x
  3. Step 3: Cross multiply
    21,190.47x = 29,156.49 × 19,440.87
  4. Step 4: Simplify right side
    21,190.47x = 566,827,531.75
  5. Step 5: Solve for x
    x = 566,827,531.75/21,190.47
  6. Step 6: Final answer
    x = 26,749.17

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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.