Home / 30,981.57-46,449.47-9,909.42

Finding the Fourth Proportional to 30,981.57, 46,449.47 and 9,909.42

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Solution

The fourth proportional to 30,981.57, 46,449.47 and 9,909.42 is: 14,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.57 : 46,449.47 = 9,909.42 : x
  2. Step 2: Convert to fraction form
    30,981.57/46,449.47 = 9,909.42/x
  3. Step 3: Cross multiply
    30,981.57x = 46,449.47 × 9,909.42
  4. Step 4: Simplify right side
    30,981.57x = 460,287,257.46
  5. Step 5: Solve for x
    x = 460,287,257.46/30,981.57
  6. Step 6: Final answer
    x = 14,856.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.