Home / 30,730.87-42,409.40-17,302.61

Finding the Fourth Proportional to 30,730.87, 42,409.40 and 17,302.61

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Solution

The fourth proportional to 30,730.87, 42,409.40 and 17,302.61 is: 23,878.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,730.87 : 42,409.40 = 17,302.61 : x
  2. Step 2: Convert to fraction form
    30,730.87/42,409.40 = 17,302.61/x
  3. Step 3: Cross multiply
    30,730.87x = 42,409.40 × 17,302.61
  4. Step 4: Simplify right side
    30,730.87x = 733,793,308.53
  5. Step 5: Solve for x
    x = 733,793,308.53/30,730.87
  6. Step 6: Final answer
    x = 23,878.05

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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.