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Finding the Fourth Proportional to 13,598.76, 18,766.32 and 7,937.40

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Solution

The fourth proportional to 13,598.76, 18,766.32 and 7,937.40 is: 10,953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.76 : 18,766.32 = 7,937.40 : x
  2. Step 2: Convert to fraction form
    13,598.76/18,766.32 = 7,937.40/x
  3. Step 3: Cross multiply
    13,598.76x = 18,766.32 × 7,937.40
  4. Step 4: Simplify right side
    13,598.76x = 148,955,788.37
  5. Step 5: Solve for x
    x = 148,955,788.37/13,598.76
  6. Step 6: Final answer
    x = 10,953.63

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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.