Home / 21,302.20-31,953.30-19,617.40

Finding the Fourth Proportional to 21,302.20, 31,953.30 and 19,617.40

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Solution

The fourth proportional to 21,302.20, 31,953.30 and 19,617.40 is: 29,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.20 : 31,953.30 = 19,617.40 : x
  2. Step 2: Convert to fraction form
    21,302.20/31,953.30 = 19,617.40/x
  3. Step 3: Cross multiply
    21,302.20x = 31,953.30 × 19,617.40
  4. Step 4: Simplify right side
    21,302.20x = 626,840,667.42
  5. Step 5: Solve for x
    x = 626,840,667.42/21,302.20
  6. Step 6: Final answer
    x = 29,426.10

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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.