Home / 16,851.80-23,260.11-9,780.50

Finding the Fourth Proportional to 16,851.80, 23,260.11 and 9,780.50

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Solution

The fourth proportional to 16,851.80, 23,260.11 and 9,780.50 is: 13,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,851.80 : 23,260.11 = 9,780.50 : x
  2. Step 2: Convert to fraction form
    16,851.80/23,260.11 = 9,780.50/x
  3. Step 3: Cross multiply
    16,851.80x = 23,260.11 × 9,780.50
  4. Step 4: Simplify right side
    16,851.80x = 227,495,505.86
  5. Step 5: Solve for x
    x = 227,495,505.86/16,851.80
  6. Step 6: Final answer
    x = 13,499.77

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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.