Home / 13,666.61-20,502.79-7,746.33

Finding the Fourth Proportional to 13,666.61, 20,502.79 and 7,746.33

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Solution

The fourth proportional to 13,666.61, 20,502.79 and 7,746.33 is: 11,621.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.61 : 20,502.79 = 7,746.33 : x
  2. Step 2: Convert to fraction form
    13,666.61/20,502.79 = 7,746.33/x
  3. Step 3: Cross multiply
    13,666.61x = 20,502.79 × 7,746.33
  4. Step 4: Simplify right side
    13,666.61x = 158,821,287.27
  5. Step 5: Solve for x
    x = 158,821,287.27/13,666.61
  6. Step 6: Final answer
    x = 11,621.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.