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Finding the Fourth Proportional to 28,985.36, 43,471.04 and 7,925.49

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Solution

The fourth proportional to 28,985.36, 43,471.04 and 7,925.49 is: 11,886.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.36 : 43,471.04 = 7,925.49 : x
  2. Step 2: Convert to fraction form
    28,985.36/43,471.04 = 7,925.49/x
  3. Step 3: Cross multiply
    28,985.36x = 43,471.04 × 7,925.49
  4. Step 4: Simplify right side
    28,985.36x = 344,529,253.18
  5. Step 5: Solve for x
    x = 344,529,253.18/28,985.36
  6. Step 6: Final answer
    x = 11,886.32

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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.