Home / 28,117.80-42,176.70-19,260.45

Finding the Fourth Proportional to 28,117.80, 42,176.70 and 19,260.45

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Solution

The fourth proportional to 28,117.80, 42,176.70 and 19,260.45 is: 28,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.80 : 42,176.70 = 19,260.45 : x
  2. Step 2: Convert to fraction form
    28,117.80/42,176.70 = 19,260.45/x
  3. Step 3: Cross multiply
    28,117.80x = 42,176.70 × 19,260.45
  4. Step 4: Simplify right side
    28,117.80x = 812,342,221.52
  5. Step 5: Solve for x
    x = 812,342,221.52/28,117.80
  6. Step 6: Final answer
    x = 28,890.68

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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.