Home / 30,811.44-42,521.28-18,875.43

Finding the Fourth Proportional to 30,811.44, 42,521.28 and 18,875.43

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Solution

The fourth proportional to 30,811.44, 42,521.28 and 18,875.43 is: 26,049.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.44 : 42,521.28 = 18,875.43 : x
  2. Step 2: Convert to fraction form
    30,811.44/42,521.28 = 18,875.43/x
  3. Step 3: Cross multiply
    30,811.44x = 42,521.28 × 18,875.43
  4. Step 4: Simplify right side
    30,811.44x = 802,607,426.45
  5. Step 5: Solve for x
    x = 802,607,426.45/30,811.44
  6. Step 6: Final answer
    x = 26,049.01

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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.