Home / 16,981.10-23,435.40-9,428.90

Finding the Fourth Proportional to 16,981.10, 23,435.40 and 9,428.90

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Solution

The fourth proportional to 16,981.10, 23,435.40 and 9,428.90 is: 13,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.10 : 23,435.40 = 9,428.90 : x
  2. Step 2: Convert to fraction form
    16,981.10/23,435.40 = 9,428.90/x
  3. Step 3: Cross multiply
    16,981.10x = 23,435.40 × 9,428.90
  4. Step 4: Simplify right side
    16,981.10x = 220,969,925.88
  5. Step 5: Solve for x
    x = 220,969,925.88/16,981.10
  6. Step 6: Final answer
    x = 13,012.70

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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.