Home / 21,710.84-29,928.30-16,986.92

Finding the Fourth Proportional to 21,710.84, 29,928.30 and 16,986.92

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Solution

The fourth proportional to 21,710.84, 29,928.30 and 16,986.92 is: 23,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,710.84 : 29,928.30 = 16,986.92 : x
  2. Step 2: Convert to fraction form
    21,710.84/29,928.30 = 16,986.92/x
  3. Step 3: Cross multiply
    21,710.84x = 29,928.30 × 16,986.92
  4. Step 4: Simplify right side
    21,710.84x = 508,389,637.84
  5. Step 5: Solve for x
    x = 508,389,637.84/21,710.84
  6. Step 6: Final answer
    x = 23,416.40

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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.