Home / 11,713.26-17,420.55-11,417.72

Finding the Fourth Proportional to 11,713.26, 17,420.55 and 11,417.72

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Solution

The fourth proportional to 11,713.26, 17,420.55 and 11,417.72 is: 16,981.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,713.26 : 17,420.55 = 11,417.72 : x
  2. Step 2: Convert to fraction form
    11,713.26/17,420.55 = 11,417.72/x
  3. Step 3: Cross multiply
    11,713.26x = 17,420.55 × 11,417.72
  4. Step 4: Simplify right side
    11,713.26x = 198,902,875.04
  5. Step 5: Solve for x
    x = 198,902,875.04/11,713.26
  6. Step 6: Final answer
    x = 16,981.00

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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.