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Finding the Fourth Proportional to 19,341.99, 28,985.04 and 8,242.56

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Solution

The fourth proportional to 19,341.99, 28,985.04 and 8,242.56 is: 12,351.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,341.99 : 28,985.04 = 8,242.56 : x
  2. Step 2: Convert to fraction form
    19,341.99/28,985.04 = 8,242.56/x
  3. Step 3: Cross multiply
    19,341.99x = 28,985.04 × 8,242.56
  4. Step 4: Simplify right side
    19,341.99x = 238,910,931.30
  5. Step 5: Solve for x
    x = 238,910,931.30/19,341.99
  6. Step 6: Final answer
    x = 12,351.93

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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.