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Finding the Fourth Proportional to 19,220, 26,523.60 and 10,388

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Solution

The fourth proportional to 19,220, 26,523.60 and 10,388 is: 14,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220 : 26,523.60 = 10,388 : x
  2. Step 2: Convert to fraction form
    19,220/26,523.60 = 10,388/x
  3. Step 3: Cross multiply
    19,220x = 26,523.60 × 10,388
  4. Step 4: Simplify right side
    19,220x = 275,527,156.80
  5. Step 5: Solve for x
    x = 275,527,156.80/19,220
  6. Step 6: Final answer
    x = 14,335.44

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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.