Home / 28,681.40-39,599.40-21,136.24

Finding the Fourth Proportional to 28,681.40, 39,599.40 and 21,136.24

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Solution

The fourth proportional to 28,681.40, 39,599.40 and 21,136.24 is: 29,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.40 : 39,599.40 = 21,136.24 : x
  2. Step 2: Convert to fraction form
    28,681.40/39,599.40 = 21,136.24/x
  3. Step 3: Cross multiply
    28,681.40x = 39,599.40 × 21,136.24
  4. Step 4: Simplify right side
    28,681.40x = 836,982,422.26
  5. Step 5: Solve for x
    x = 836,982,422.26/28,681.40
  6. Step 6: Final answer
    x = 29,182.06

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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.