Home / 28,130.92-42,140.72-22,871.80

Finding the Fourth Proportional to 28,130.92, 42,140.72 and 22,871.80

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Solution

The fourth proportional to 28,130.92, 42,140.72 and 22,871.80 is: 34,262.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.92 : 42,140.72 = 22,871.80 : x
  2. Step 2: Convert to fraction form
    28,130.92/42,140.72 = 22,871.80/x
  3. Step 3: Cross multiply
    28,130.92x = 42,140.72 × 22,871.80
  4. Step 4: Simplify right side
    28,130.92x = 963,834,119.70
  5. Step 5: Solve for x
    x = 963,834,119.70/28,130.92
  6. Step 6: Final answer
    x = 34,262.45

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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.