Home / 21,778.07-30,053.70-12,346.63

Finding the Fourth Proportional to 21,778.07, 30,053.70 and 12,346.63

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Solution

The fourth proportional to 21,778.07, 30,053.70 and 12,346.63 is: 17,038.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.07 : 30,053.70 = 12,346.63 : x
  2. Step 2: Convert to fraction form
    21,778.07/30,053.70 = 12,346.63/x
  3. Step 3: Cross multiply
    21,778.07x = 30,053.70 × 12,346.63
  4. Step 4: Simplify right side
    21,778.07x = 371,061,838.90
  5. Step 5: Solve for x
    x = 371,061,838.90/21,778.07
  6. Step 6: Final answer
    x = 17,038.33

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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.