Home / 10,854.90-14,921.60-9,785.70

Finding the Fourth Proportional to 10,854.90, 14,921.60 and 9,785.70

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Solution

The fourth proportional to 10,854.90, 14,921.60 and 9,785.70 is: 13,451.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,854.90 : 14,921.60 = 9,785.70 : x
  2. Step 2: Convert to fraction form
    10,854.90/14,921.60 = 9,785.70/x
  3. Step 3: Cross multiply
    10,854.90x = 14,921.60 × 9,785.70
  4. Step 4: Simplify right side
    10,854.90x = 146,018,252.19
  5. Step 5: Solve for x
    x = 146,018,252.19/10,854.90
  6. Step 6: Final answer
    x = 13,451.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.