Home / 13,358.29-19,938.77-11,782.40

Finding the Fourth Proportional to 13,358.29, 19,938.77 and 11,782.40

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Solution

The fourth proportional to 13,358.29, 19,938.77 and 11,782.40 is: 17,586.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.29 : 19,938.77 = 11,782.40 : x
  2. Step 2: Convert to fraction form
    13,358.29/19,938.77 = 11,782.40/x
  3. Step 3: Cross multiply
    13,358.29x = 19,938.77 × 11,782.40
  4. Step 4: Simplify right side
    13,358.29x = 234,926,518.33
  5. Step 5: Solve for x
    x = 234,926,518.33/13,358.29
  6. Step 6: Final answer
    x = 17,586.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.