Home / 12,946.83-17,865.93-7,639.71

Finding the Fourth Proportional to 12,946.83, 17,865.93 and 7,639.71

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Solution

The fourth proportional to 12,946.83, 17,865.93 and 7,639.71 is: 10,542.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,946.83 : 17,865.93 = 7,639.71 : x
  2. Step 2: Convert to fraction form
    12,946.83/17,865.93 = 7,639.71/x
  3. Step 3: Cross multiply
    12,946.83x = 17,865.93 × 7,639.71
  4. Step 4: Simplify right side
    12,946.83x = 136,490,524.08
  5. Step 5: Solve for x
    x = 136,490,524.08/12,946.83
  6. Step 6: Final answer
    x = 10,542.39

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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.