Home / 13,007.28-19,355.19-12,963.54

Finding the Fourth Proportional to 13,007.28, 19,355.19 and 12,963.54

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Solution

The fourth proportional to 13,007.28, 19,355.19 and 12,963.54 is: 19,290.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007.28 : 19,355.19 = 12,963.54 : x
  2. Step 2: Convert to fraction form
    13,007.28/19,355.19 = 12,963.54/x
  3. Step 3: Cross multiply
    13,007.28x = 19,355.19 × 12,963.54
  4. Step 4: Simplify right side
    13,007.28x = 250,911,779.77
  5. Step 5: Solve for x
    x = 250,911,779.77/13,007.28
  6. Step 6: Final answer
    x = 19,290.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.