Home / 30,636.87-42,278.82-17,898.81

Finding the Fourth Proportional to 30,636.87, 42,278.82 and 17,898.81

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Solution

The fourth proportional to 30,636.87, 42,278.82 and 17,898.81 is: 24,700.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,636.87 : 42,278.82 = 17,898.81 : x
  2. Step 2: Convert to fraction form
    30,636.87/42,278.82 = 17,898.81/x
  3. Step 3: Cross multiply
    30,636.87x = 42,278.82 × 17,898.81
  4. Step 4: Simplify right side
    30,636.87x = 756,740,566.20
  5. Step 5: Solve for x
    x = 756,740,566.20/30,636.87
  6. Step 6: Final answer
    x = 24,700.32

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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.