Home / 21,378.24-29,510.22-19,136.16

Finding the Fourth Proportional to 21,378.24, 29,510.22 and 19,136.16

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Solution

The fourth proportional to 21,378.24, 29,510.22 and 19,136.16 is: 26,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.24 : 29,510.22 = 19,136.16 : x
  2. Step 2: Convert to fraction form
    21,378.24/29,510.22 = 19,136.16/x
  3. Step 3: Cross multiply
    21,378.24x = 29,510.22 × 19,136.16
  4. Step 4: Simplify right side
    21,378.24x = 564,712,291.56
  5. Step 5: Solve for x
    x = 564,712,291.56/21,378.24
  6. Step 6: Final answer
    x = 26,415.28

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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.