Home / 30,599.17-42,228.39-19,121.01

Finding the Fourth Proportional to 30,599.17, 42,228.39 and 19,121.01

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Solution

The fourth proportional to 30,599.17, 42,228.39 and 19,121.01 is: 26,387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,599.17 : 42,228.39 = 19,121.01 : x
  2. Step 2: Convert to fraction form
    30,599.17/42,228.39 = 19,121.01/x
  3. Step 3: Cross multiply
    30,599.17x = 42,228.39 × 19,121.01
  4. Step 4: Simplify right side
    30,599.17x = 807,449,510.80
  5. Step 5: Solve for x
    x = 807,449,510.80/30,599.17
  6. Step 6: Final answer
    x = 26,387.96

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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.