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Finding the Fourth Proportional to 9,372.60, 13,985.91 and 9,307.80

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Solution

The fourth proportional to 9,372.60, 13,985.91 and 9,307.80 is: 13,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,372.60 : 13,985.91 = 9,307.80 : x
  2. Step 2: Convert to fraction form
    9,372.60/13,985.91 = 9,307.80/x
  3. Step 3: Cross multiply
    9,372.60x = 13,985.91 × 9,307.80
  4. Step 4: Simplify right side
    9,372.60x = 130,178,053.10
  5. Step 5: Solve for x
    x = 130,178,053.10/9,372.60
  6. Step 6: Final answer
    x = 13,889.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.