Home / 28,664.25-42,985.45-11,130

Finding the Fourth Proportional to 28,664.25, 42,985.45 and 11,130

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Solution

The fourth proportional to 28,664.25, 42,985.45 and 11,130 is: 16,690.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.25 : 42,985.45 = 11,130 : x
  2. Step 2: Convert to fraction form
    28,664.25/42,985.45 = 11,130/x
  3. Step 3: Cross multiply
    28,664.25x = 42,985.45 × 11,130
  4. Step 4: Simplify right side
    28,664.25x = 478,428,058.50
  5. Step 5: Solve for x
    x = 478,428,058.50/28,664.25
  6. Step 6: Final answer
    x = 16,690.76

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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.