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Finding the Fourth Proportional to 20,000.71, 29,984.06 and 12,214.99

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Solution

The fourth proportional to 20,000.71, 29,984.06 and 12,214.99 is: 18,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.71 : 29,984.06 = 12,214.99 : x
  2. Step 2: Convert to fraction form
    20,000.71/29,984.06 = 12,214.99/x
  3. Step 3: Cross multiply
    20,000.71x = 29,984.06 × 12,214.99
  4. Step 4: Simplify right side
    20,000.71x = 366,254,931.98
  5. Step 5: Solve for x
    x = 366,254,931.98/20,000.71
  6. Step 6: Final answer
    x = 18,312.10

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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.