Home / 20,740.32-28,555.02-18,460.80

Finding the Fourth Proportional to 20,740.32, 28,555.02 and 18,460.80

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Solution

The fourth proportional to 20,740.32, 28,555.02 and 18,460.80 is: 25,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.32 : 28,555.02 = 18,460.80 : x
  2. Step 2: Convert to fraction form
    20,740.32/28,555.02 = 18,460.80/x
  3. Step 3: Cross multiply
    20,740.32x = 28,555.02 × 18,460.80
  4. Step 4: Simplify right side
    20,740.32x = 527,148,513.22
  5. Step 5: Solve for x
    x = 527,148,513.22/20,740.32
  6. Step 6: Final answer
    x = 25,416.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.