Home / 13,782.38-19,019.58-7,494.80

Finding the Fourth Proportional to 13,782.38, 19,019.58 and 7,494.80

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Solution

The fourth proportional to 13,782.38, 19,019.58 and 7,494.80 is: 10,342.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.38 : 19,019.58 = 7,494.80 : x
  2. Step 2: Convert to fraction form
    13,782.38/19,019.58 = 7,494.80/x
  3. Step 3: Cross multiply
    13,782.38x = 19,019.58 × 7,494.80
  4. Step 4: Simplify right side
    13,782.38x = 142,547,948.18
  5. Step 5: Solve for x
    x = 142,547,948.18/13,782.38
  6. Step 6: Final answer
    x = 10,342.77

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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.