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Finding the Fourth Proportional to 19,325.79, 28,980.18 and 9,971.10

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Solution

The fourth proportional to 19,325.79, 28,980.18 and 9,971.10 is: 14,952.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.79 : 28,980.18 = 9,971.10 : x
  2. Step 2: Convert to fraction form
    19,325.79/28,980.18 = 9,971.10/x
  3. Step 3: Cross multiply
    19,325.79x = 28,980.18 × 9,971.10
  4. Step 4: Simplify right side
    19,325.79x = 288,964,272.80
  5. Step 5: Solve for x
    x = 288,964,272.80/19,325.79
  6. Step 6: Final answer
    x = 14,952.26

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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.