Home / 21,289.25-31,962.14-18,189.17

Finding the Fourth Proportional to 21,289.25, 31,962.14 and 18,189.17

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Solution

The fourth proportional to 21,289.25, 31,962.14 and 18,189.17 is: 27,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.25 : 31,962.14 = 18,189.17 : x
  2. Step 2: Convert to fraction form
    21,289.25/31,962.14 = 18,189.17/x
  3. Step 3: Cross multiply
    21,289.25x = 31,962.14 × 18,189.17
  4. Step 4: Simplify right side
    21,289.25x = 581,364,798.02
  5. Step 5: Solve for x
    x = 581,364,798.02/21,289.25
  6. Step 6: Final answer
    x = 27,307.90

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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.