Home / 28,437.18-42,637.50-11,808.68

Finding the Fourth Proportional to 28,437.18, 42,637.50 and 11,808.68

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Solution

The fourth proportional to 28,437.18, 42,637.50 and 11,808.68 is: 17,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.18 : 42,637.50 = 11,808.68 : x
  2. Step 2: Convert to fraction form
    28,437.18/42,637.50 = 11,808.68/x
  3. Step 3: Cross multiply
    28,437.18x = 42,637.50 × 11,808.68
  4. Step 4: Simplify right side
    28,437.18x = 503,492,593.50
  5. Step 5: Solve for x
    x = 503,492,593.50/28,437.18
  6. Step 6: Final answer
    x = 17,705.43

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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.