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Finding the Fourth Proportional to 15,339.40, 22,984.80 and 9,782.80

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Solution

The fourth proportional to 15,339.40, 22,984.80 and 9,782.80 is: 14,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.40 : 22,984.80 = 9,782.80 : x
  2. Step 2: Convert to fraction form
    15,339.40/22,984.80 = 9,782.80/x
  3. Step 3: Cross multiply
    15,339.40x = 22,984.80 × 9,782.80
  4. Step 4: Simplify right side
    15,339.40x = 224,855,701.44
  5. Step 5: Solve for x
    x = 224,855,701.44/15,339.40
  6. Step 6: Final answer
    x = 14,658.70

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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.