Home / 15,491.07-21,379.50-9,203.45

Finding the Fourth Proportional to 15,491.07, 21,379.50 and 9,203.45

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Solution

The fourth proportional to 15,491.07, 21,379.50 and 9,203.45 is: 12,701.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,491.07 : 21,379.50 = 9,203.45 : x
  2. Step 2: Convert to fraction form
    15,491.07/21,379.50 = 9,203.45/x
  3. Step 3: Cross multiply
    15,491.07x = 21,379.50 × 9,203.45
  4. Step 4: Simplify right side
    15,491.07x = 196,765,159.28
  5. Step 5: Solve for x
    x = 196,765,159.28/15,491.07
  6. Step 6: Final answer
    x = 12,701.84

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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.