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Finding the Fourth Proportional to 19,368.27, 28,990.12 and 9,995.52

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Solution

The fourth proportional to 19,368.27, 28,990.12 and 9,995.52 is: 14,961.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.27 : 28,990.12 = 9,995.52 : x
  2. Step 2: Convert to fraction form
    19,368.27/28,990.12 = 9,995.52/x
  3. Step 3: Cross multiply
    19,368.27x = 28,990.12 × 9,995.52
  4. Step 4: Simplify right side
    19,368.27x = 289,771,409.85
  5. Step 5: Solve for x
    x = 289,771,409.85/19,368.27
  6. Step 6: Final answer
    x = 14,961.14

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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.