Home / 21,651.85-29,863-14,948.70

Finding the Fourth Proportional to 21,651.85, 29,863 and 14,948.70

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Solution

The fourth proportional to 21,651.85, 29,863 and 14,948.70 is: 20,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.85 : 29,863 = 14,948.70 : x
  2. Step 2: Convert to fraction form
    21,651.85/29,863 = 14,948.70/x
  3. Step 3: Cross multiply
    21,651.85x = 29,863 × 14,948.70
  4. Step 4: Simplify right side
    21,651.85x = 446,412,878.79
  5. Step 5: Solve for x
    x = 446,412,878.79/21,651.85
  6. Step 6: Final answer
    x = 20,617.77

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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.