Home / 21,744.95-30,008.01-12,315.33

Finding the Fourth Proportional to 21,744.95, 30,008.01 and 12,315.33

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Solution

The fourth proportional to 21,744.95, 30,008.01 and 12,315.33 is: 16,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.95 : 30,008.01 = 12,315.33 : x
  2. Step 2: Convert to fraction form
    21,744.95/30,008.01 = 12,315.33/x
  3. Step 3: Cross multiply
    21,744.95x = 30,008.01 × 12,315.33
  4. Step 4: Simplify right side
    21,744.95x = 369,558,545.79
  5. Step 5: Solve for x
    x = 369,558,545.79/21,744.95
  6. Step 6: Final answer
    x = 16,995.15

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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.