Home / 12,961.13-17,880.71-7,925.55

Finding the Fourth Proportional to 12,961.13, 17,880.71 and 7,925.55

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Solution

The fourth proportional to 12,961.13, 17,880.71 and 7,925.55 is: 10,933.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.13 : 17,880.71 = 7,925.55 : x
  2. Step 2: Convert to fraction form
    12,961.13/17,880.71 = 7,925.55/x
  3. Step 3: Cross multiply
    12,961.13x = 17,880.71 × 7,925.55
  4. Step 4: Simplify right side
    12,961.13x = 141,714,421.51
  5. Step 5: Solve for x
    x = 141,714,421.51/12,961.13
  6. Step 6: Final answer
    x = 10,933.81

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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.