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Finding the Fourth Proportional to 8,925.21, 13,465.74 and 8,900.61

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Solution

The fourth proportional to 8,925.21, 13,465.74 and 8,900.61 is: 13,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,925.21 : 13,465.74 = 8,900.61 : x
  2. Step 2: Convert to fraction form
    8,925.21/13,465.74 = 8,900.61/x
  3. Step 3: Cross multiply
    8,925.21x = 13,465.74 × 8,900.61
  4. Step 4: Simplify right side
    8,925.21x = 119,853,300.10
  5. Step 5: Solve for x
    x = 119,853,300.10/8,925.21
  6. Step 6: Final answer
    x = 13,428.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.