Home / 22,219.90-30,666.16-12,788.26

Finding the Fourth Proportional to 22,219.90, 30,666.16 and 12,788.26

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Solution

The fourth proportional to 22,219.90, 30,666.16 and 12,788.26 is: 17,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,219.90 : 30,666.16 = 12,788.26 : x
  2. Step 2: Convert to fraction form
    22,219.90/30,666.16 = 12,788.26/x
  3. Step 3: Cross multiply
    22,219.90x = 30,666.16 × 12,788.26
  4. Step 4: Simplify right side
    22,219.90x = 392,166,827.28
  5. Step 5: Solve for x
    x = 392,166,827.28/22,219.90
  6. Step 6: Final answer
    x = 17,649.35

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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.