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Finding the Fourth Proportional to 20,737, 28,627.28 and 14,368.42

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Solution

The fourth proportional to 20,737, 28,627.28 and 14,368.42 is: 19,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737 : 28,627.28 = 14,368.42 : x
  2. Step 2: Convert to fraction form
    20,737/28,627.28 = 14,368.42/x
  3. Step 3: Cross multiply
    20,737x = 28,627.28 × 14,368.42
  4. Step 4: Simplify right side
    20,737x = 411,328,782.50
  5. Step 5: Solve for x
    x = 411,328,782.50/20,737
  6. Step 6: Final answer
    x = 19,835.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.