Home / 21,266.24-31,902.78-12,952.40

Finding the Fourth Proportional to 21,266.24, 31,902.78 and 12,952.40

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Solution

The fourth proportional to 21,266.24, 31,902.78 and 12,952.40 is: 19,430.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.24 : 31,902.78 = 12,952.40 : x
  2. Step 2: Convert to fraction form
    21,266.24/31,902.78 = 12,952.40/x
  3. Step 3: Cross multiply
    21,266.24x = 31,902.78 × 12,952.40
  4. Step 4: Simplify right side
    21,266.24x = 413,217,567.67
  5. Step 5: Solve for x
    x = 413,217,567.67/21,266.24
  6. Step 6: Final answer
    x = 19,430.68

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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.