Home / 12,678.48-17,503.32-10,155.60

Finding the Fourth Proportional to 12,678.48, 17,503.32 and 10,155.60

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Solution

The fourth proportional to 12,678.48, 17,503.32 and 10,155.60 is: 14,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.48 : 17,503.32 = 10,155.60 : x
  2. Step 2: Convert to fraction form
    12,678.48/17,503.32 = 10,155.60/x
  3. Step 3: Cross multiply
    12,678.48x = 17,503.32 × 10,155.60
  4. Step 4: Simplify right side
    12,678.48x = 177,756,716.59
  5. Step 5: Solve for x
    x = 177,756,716.59/12,678.48
  6. Step 6: Final answer
    x = 14,020.35

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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.