Home / 30,639.96-42,276.59-17,887.35

Finding the Fourth Proportional to 30,639.96, 42,276.59 and 17,887.35

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Solution

The fourth proportional to 30,639.96, 42,276.59 and 17,887.35 is: 24,680.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,639.96 : 42,276.59 = 17,887.35 : x
  2. Step 2: Convert to fraction form
    30,639.96/42,276.59 = 17,887.35/x
  3. Step 3: Cross multiply
    30,639.96x = 42,276.59 × 17,887.35
  4. Step 4: Simplify right side
    30,639.96x = 756,216,072.70
  5. Step 5: Solve for x
    x = 756,216,072.70/30,639.96
  6. Step 6: Final answer
    x = 24,680.71

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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.