Home / 15,315.59-21,136.88-9,026.75

Finding the Fourth Proportional to 15,315.59, 21,136.88 and 9,026.75

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Solution

The fourth proportional to 15,315.59, 21,136.88 and 9,026.75 is: 12,457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.59 : 21,136.88 = 9,026.75 : x
  2. Step 2: Convert to fraction form
    15,315.59/21,136.88 = 9,026.75/x
  3. Step 3: Cross multiply
    15,315.59x = 21,136.88 × 9,026.75
  4. Step 4: Simplify right side
    15,315.59x = 190,797,331.54
  5. Step 5: Solve for x
    x = 190,797,331.54/15,315.59
  6. Step 6: Final answer
    x = 12,457.72

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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.