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Finding the Fourth Proportional to 28,387.77, 42,603.53 and 22,854.67

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Solution

The fourth proportional to 28,387.77, 42,603.53 and 22,854.67 is: 34,299.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.77 : 42,603.53 = 22,854.67 : x
  2. Step 2: Convert to fraction form
    28,387.77/42,603.53 = 22,854.67/x
  3. Step 3: Cross multiply
    28,387.77x = 42,603.53 × 22,854.67
  4. Step 4: Simplify right side
    28,387.77x = 973,689,504.71
  5. Step 5: Solve for x
    x = 973,689,504.71/28,387.77
  6. Step 6: Final answer
    x = 34,299.61

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1.5x scale

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.