Home / 18,740.48-28,124.60-8,879.80

Finding the Fourth Proportional to 18,740.48, 28,124.60 and 8,879.80

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Solution

The fourth proportional to 18,740.48, 28,124.60 and 8,879.80 is: 13,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.48 : 28,124.60 = 8,879.80 : x
  2. Step 2: Convert to fraction form
    18,740.48/28,124.60 = 8,879.80/x
  3. Step 3: Cross multiply
    18,740.48x = 28,124.60 × 8,879.80
  4. Step 4: Simplify right side
    18,740.48x = 249,740,823.08
  5. Step 5: Solve for x
    x = 249,740,823.08/18,740.48
  6. Step 6: Final answer
    x = 13,326.28

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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.