Home / 30,954.35-42,717.78-16,807.20

Finding the Fourth Proportional to 30,954.35, 42,717.78 and 16,807.20

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Solution

The fourth proportional to 30,954.35, 42,717.78 and 16,807.20 is: 23,194.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,954.35 : 42,717.78 = 16,807.20 : x
  2. Step 2: Convert to fraction form
    30,954.35/42,717.78 = 16,807.20/x
  3. Step 3: Cross multiply
    30,954.35x = 42,717.78 × 16,807.20
  4. Step 4: Simplify right side
    30,954.35x = 717,966,111.82
  5. Step 5: Solve for x
    x = 717,966,111.82/30,954.35
  6. Step 6: Final answer
    x = 23,194.35

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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.