Home / 16,780.02-23,154.50-13,421.62

Finding the Fourth Proportional to 16,780.02, 23,154.50 and 13,421.62

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Solution

The fourth proportional to 16,780.02, 23,154.50 and 13,421.62 is: 18,520.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,780.02 : 23,154.50 = 13,421.62 : x
  2. Step 2: Convert to fraction form
    16,780.02/23,154.50 = 13,421.62/x
  3. Step 3: Cross multiply
    16,780.02x = 23,154.50 × 13,421.62
  4. Step 4: Simplify right side
    16,780.02x = 310,770,900.29
  5. Step 5: Solve for x
    x = 310,770,900.29/16,780.02
  6. Step 6: Final answer
    x = 18,520.29

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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.