Home / 13,021.26-17,970.45-7,357.05

Finding the Fourth Proportional to 13,021.26, 17,970.45 and 7,357.05

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Solution

The fourth proportional to 13,021.26, 17,970.45 and 7,357.05 is: 10,153.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.26 : 17,970.45 = 7,357.05 : x
  2. Step 2: Convert to fraction form
    13,021.26/17,970.45 = 7,357.05/x
  3. Step 3: Cross multiply
    13,021.26x = 17,970.45 × 7,357.05
  4. Step 4: Simplify right side
    13,021.26x = 132,209,499.17
  5. Step 5: Solve for x
    x = 132,209,499.17/13,021.26
  6. Step 6: Final answer
    x = 10,153.36

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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.