Home / 21,747.88-30,011.07-12,316.51

Finding the Fourth Proportional to 21,747.88, 30,011.07 and 12,316.51

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Solution

The fourth proportional to 21,747.88, 30,011.07 and 12,316.51 is: 16,996.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.88 : 30,011.07 = 12,316.51 : x
  2. Step 2: Convert to fraction form
    21,747.88/30,011.07 = 12,316.51/x
  3. Step 3: Cross multiply
    21,747.88x = 30,011.07 × 12,316.51
  4. Step 4: Simplify right side
    21,747.88x = 369,631,643.77
  5. Step 5: Solve for x
    x = 369,631,643.77/21,747.88
  6. Step 6: Final answer
    x = 16,996.21

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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.