Home / 30,943.04-42,689.43-17,511.21

Finding the Fourth Proportional to 30,943.04, 42,689.43 and 17,511.21

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Solution

The fourth proportional to 30,943.04, 42,689.43 and 17,511.21 is: 24,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,943.04 : 42,689.43 = 17,511.21 : x
  2. Step 2: Convert to fraction form
    30,943.04/42,689.43 = 17,511.21/x
  3. Step 3: Cross multiply
    30,943.04x = 42,689.43 × 17,511.21
  4. Step 4: Simplify right side
    30,943.04x = 747,543,573.51
  5. Step 5: Solve for x
    x = 747,543,573.51/30,943.04
  6. Step 6: Final answer
    x = 24,158.70

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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.