Home / 30,959.28-42,722.48-16,811.84

Finding the Fourth Proportional to 30,959.28, 42,722.48 and 16,811.84

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Solution

The fourth proportional to 30,959.28, 42,722.48 and 16,811.84 is: 23,199.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,959.28 : 42,722.48 = 16,811.84 : x
  2. Step 2: Convert to fraction form
    30,959.28/42,722.48 = 16,811.84/x
  3. Step 3: Cross multiply
    30,959.28x = 42,722.48 × 16,811.84
  4. Step 4: Simplify right side
    30,959.28x = 718,243,498.16
  5. Step 5: Solve for x
    x = 718,243,498.16/30,959.28
  6. Step 6: Final answer
    x = 23,199.62

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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.