Home / 13,088.88-19,643.31-6,520.59

Finding the Fourth Proportional to 13,088.88, 19,643.31 and 6,520.59

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Solution

The fourth proportional to 13,088.88, 19,643.31 and 6,520.59 is: 9,785.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,088.88 : 19,643.31 = 6,520.59 : x
  2. Step 2: Convert to fraction form
    13,088.88/19,643.31 = 6,520.59/x
  3. Step 3: Cross multiply
    13,088.88x = 19,643.31 × 6,520.59
  4. Step 4: Simplify right side
    13,088.88x = 128,085,970.75
  5. Step 5: Solve for x
    x = 128,085,970.75/13,088.88
  6. Step 6: Final answer
    x = 9,785.86

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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.