Home / 12,880.14-19,315.52-5,854.20

Finding the Fourth Proportional to 12,880.14, 19,315.52 and 5,854.20

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Solution

The fourth proportional to 12,880.14, 19,315.52 and 5,854.20 is: 8,779.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.14 : 19,315.52 = 5,854.20 : x
  2. Step 2: Convert to fraction form
    12,880.14/19,315.52 = 5,854.20/x
  3. Step 3: Cross multiply
    12,880.14x = 19,315.52 × 5,854.20
  4. Step 4: Simplify right side
    12,880.14x = 113,076,917.18
  5. Step 5: Solve for x
    x = 113,076,917.18/12,880.14
  6. Step 6: Final answer
    x = 8,779.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.