Home / 21,374.76-29,339.15-20,461.35

Finding the Fourth Proportional to 21,374.76, 29,339.15 and 20,461.35

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Solution

The fourth proportional to 21,374.76, 29,339.15 and 20,461.35 is: 28,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.76 : 29,339.15 = 20,461.35 : x
  2. Step 2: Convert to fraction form
    21,374.76/29,339.15 = 20,461.35/x
  3. Step 3: Cross multiply
    21,374.76x = 29,339.15 × 20,461.35
  4. Step 4: Simplify right side
    21,374.76x = 600,318,616.85
  5. Step 5: Solve for x
    x = 600,318,616.85/21,374.76
  6. Step 6: Final answer
    x = 28,085.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.