Home / 28,461.57-42,643.14-22,138.40

Finding the Fourth Proportional to 28,461.57, 42,643.14 and 22,138.40

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Solution

The fourth proportional to 28,461.57, 42,643.14 and 22,138.40 is: 33,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,461.57 : 42,643.14 = 22,138.40 : x
  2. Step 2: Convert to fraction form
    28,461.57/42,643.14 = 22,138.40/x
  3. Step 3: Cross multiply
    28,461.57x = 42,643.14 × 22,138.40
  4. Step 4: Simplify right side
    28,461.57x = 944,050,890.58
  5. Step 5: Solve for x
    x = 944,050,890.58/28,461.57
  6. Step 6: Final answer
    x = 33,169.32

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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.