Home / 13,332.40-19,972.20-11,690.80

Finding the Fourth Proportional to 13,332.40, 19,972.20 and 11,690.80

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Solution

The fourth proportional to 13,332.40, 19,972.20 and 11,690.80 is: 17,513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332.40 : 19,972.20 = 11,690.80 : x
  2. Step 2: Convert to fraction form
    13,332.40/19,972.20 = 11,690.80/x
  3. Step 3: Cross multiply
    13,332.40x = 19,972.20 × 11,690.80
  4. Step 4: Simplify right side
    13,332.40x = 233,490,995.76
  5. Step 5: Solve for x
    x = 233,490,995.76/13,332.40
  6. Step 6: Final answer
    x = 17,513.05

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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.