Home / 16,897.60-23,320.20-9,345.70

Finding the Fourth Proportional to 16,897.60, 23,320.20 and 9,345.70

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Solution

The fourth proportional to 16,897.60, 23,320.20 and 9,345.70 is: 12,897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,897.60 : 23,320.20 = 9,345.70 : x
  2. Step 2: Convert to fraction form
    16,897.60/23,320.20 = 9,345.70/x
  3. Step 3: Cross multiply
    16,897.60x = 23,320.20 × 9,345.70
  4. Step 4: Simplify right side
    16,897.60x = 217,943,593.14
  5. Step 5: Solve for x
    x = 217,943,593.14/16,897.60
  6. Step 6: Final answer
    x = 12,897.90

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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.