Home / 28,985.61-43,457.13-9,252.78

Finding the Fourth Proportional to 28,985.61, 43,457.13 and 9,252.78

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Solution

The fourth proportional to 28,985.61, 43,457.13 and 9,252.78 is: 13,872.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.61 : 43,457.13 = 9,252.78 : x
  2. Step 2: Convert to fraction form
    28,985.61/43,457.13 = 9,252.78/x
  3. Step 3: Cross multiply
    28,985.61x = 43,457.13 × 9,252.78
  4. Step 4: Simplify right side
    28,985.61x = 402,099,263.32
  5. Step 5: Solve for x
    x = 402,099,263.32/28,985.61
  6. Step 6: Final answer
    x = 13,872.38

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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.