Home / 13,289.61-19,895.80-7,725.99

Finding the Fourth Proportional to 13,289.61, 19,895.80 and 7,725.99

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Solution

The fourth proportional to 13,289.61, 19,895.80 and 7,725.99 is: 11,566.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.61 : 19,895.80 = 7,725.99 : x
  2. Step 2: Convert to fraction form
    13,289.61/19,895.80 = 7,725.99/x
  3. Step 3: Cross multiply
    13,289.61x = 19,895.80 × 7,725.99
  4. Step 4: Simplify right side
    13,289.61x = 153,714,633.05
  5. Step 5: Solve for x
    x = 153,714,633.05/13,289.61
  6. Step 6: Final answer
    x = 11,566.53

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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.