Home / 20,339.10-30,461.27-19,778.53

Finding the Fourth Proportional to 20,339.10, 30,461.27 and 19,778.53

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Solution

The fourth proportional to 20,339.10, 30,461.27 and 19,778.53 is: 29,621.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.10 : 30,461.27 = 19,778.53 : x
  2. Step 2: Convert to fraction form
    20,339.10/30,461.27 = 19,778.53/x
  3. Step 3: Cross multiply
    20,339.10x = 30,461.27 × 19,778.53
  4. Step 4: Simplify right side
    20,339.10x = 602,479,024.60
  5. Step 5: Solve for x
    x = 602,479,024.60/20,339.10
  6. Step 6: Final answer
    x = 29,621.72

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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.