Home / 14,290.74-19,730.85-8,921.36

Finding the Fourth Proportional to 14,290.74, 19,730.85 and 8,921.36

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Solution

The fourth proportional to 14,290.74, 19,730.85 and 8,921.36 is: 12,317.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.74 : 19,730.85 = 8,921.36 : x
  2. Step 2: Convert to fraction form
    14,290.74/19,730.85 = 8,921.36/x
  3. Step 3: Cross multiply
    14,290.74x = 19,730.85 × 8,921.36
  4. Step 4: Simplify right side
    14,290.74x = 176,025,917.30
  5. Step 5: Solve for x
    x = 176,025,917.30/14,290.74
  6. Step 6: Final answer
    x = 12,317.48

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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.