Home / 21,171.49-29,210.73-16,681.30

Finding the Fourth Proportional to 21,171.49, 29,210.73 and 16,681.30

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Solution

The fourth proportional to 21,171.49, 29,210.73 and 16,681.30 is: 23,015.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.49 : 29,210.73 = 16,681.30 : x
  2. Step 2: Convert to fraction form
    21,171.49/29,210.73 = 16,681.30/x
  3. Step 3: Cross multiply
    21,171.49x = 29,210.73 × 16,681.30
  4. Step 4: Simplify right side
    21,171.49x = 487,272,950.35
  5. Step 5: Solve for x
    x = 487,272,950.35/21,171.49
  6. Step 6: Final answer
    x = 23,015.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.