Home / 14,089.20-21,133.80-11,785.20

Finding the Fourth Proportional to 14,089.20, 21,133.80 and 11,785.20

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Solution

The fourth proportional to 14,089.20, 21,133.80 and 11,785.20 is: 17,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.20 : 21,133.80 = 11,785.20 : x
  2. Step 2: Convert to fraction form
    14,089.20/21,133.80 = 11,785.20/x
  3. Step 3: Cross multiply
    14,089.20x = 21,133.80 × 11,785.20
  4. Step 4: Simplify right side
    14,089.20x = 249,066,059.76
  5. Step 5: Solve for x
    x = 249,066,059.76/14,089.20
  6. Step 6: Final answer
    x = 17,677.80

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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.