Home / 28,502.21-42,761.15-11,870.03

Finding the Fourth Proportional to 28,502.21, 42,761.15 and 11,870.03

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Solution

The fourth proportional to 28,502.21, 42,761.15 and 11,870.03 is: 17,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.21 : 42,761.15 = 11,870.03 : x
  2. Step 2: Convert to fraction form
    28,502.21/42,761.15 = 11,870.03/x
  3. Step 3: Cross multiply
    28,502.21x = 42,761.15 × 11,870.03
  4. Step 4: Simplify right side
    28,502.21x = 507,575,860.18
  5. Step 5: Solve for x
    x = 507,575,860.18/28,502.21
  6. Step 6: Final answer
    x = 17,808.30

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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.