Home / 18,938.20-26,136.66-11,386.99

Finding the Fourth Proportional to 18,938.20, 26,136.66 and 11,386.99

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Solution

The fourth proportional to 18,938.20, 26,136.66 and 11,386.99 is: 15,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.20 : 26,136.66 = 11,386.99 : x
  2. Step 2: Convert to fraction form
    18,938.20/26,136.66 = 11,386.99/x
  3. Step 3: Cross multiply
    18,938.20x = 26,136.66 × 11,386.99
  4. Step 4: Simplify right side
    18,938.20x = 297,617,886.05
  5. Step 5: Solve for x
    x = 297,617,886.05/18,938.20
  6. Step 6: Final answer
    x = 15,715.22

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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.