Home / 14,639.91-21,981.73-14,421.21

Finding the Fourth Proportional to 14,639.91, 21,981.73 and 14,421.21

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Solution

The fourth proportional to 14,639.91, 21,981.73 and 14,421.21 is: 21,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.91 : 21,981.73 = 14,421.21 : x
  2. Step 2: Convert to fraction form
    14,639.91/21,981.73 = 14,421.21/x
  3. Step 3: Cross multiply
    14,639.91x = 21,981.73 × 14,421.21
  4. Step 4: Simplify right side
    14,639.91x = 317,002,998.53
  5. Step 5: Solve for x
    x = 317,002,998.53/14,639.91
  6. Step 6: Final answer
    x = 21,653.35

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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.