Home / 28,510.59-42,773.18-11,865.09

Finding the Fourth Proportional to 28,510.59, 42,773.18 and 11,865.09

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Solution

The fourth proportional to 28,510.59, 42,773.18 and 11,865.09 is: 17,800.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.59 : 42,773.18 = 11,865.09 : x
  2. Step 2: Convert to fraction form
    28,510.59/42,773.18 = 11,865.09/x
  3. Step 3: Cross multiply
    28,510.59x = 42,773.18 × 11,865.09
  4. Step 4: Simplify right side
    28,510.59x = 507,507,570.96
  5. Step 5: Solve for x
    x = 507,507,570.96/28,510.59
  6. Step 6: Final answer
    x = 17,800.67

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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.