Home / 20,681.89-31,011.07-14,116.03

Finding the Fourth Proportional to 20,681.89, 31,011.07 and 14,116.03

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Solution

The fourth proportional to 20,681.89, 31,011.07 and 14,116.03 is: 21,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.89 : 31,011.07 = 14,116.03 : x
  2. Step 2: Convert to fraction form
    20,681.89/31,011.07 = 14,116.03/x
  3. Step 3: Cross multiply
    20,681.89x = 31,011.07 × 14,116.03
  4. Step 4: Simplify right side
    20,681.89x = 437,753,123.87
  5. Step 5: Solve for x
    x = 437,753,123.87/20,681.89
  6. Step 6: Final answer
    x = 21,166.01

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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.