Home / 15,430.16-21,299.06-9,380.48

Finding the Fourth Proportional to 15,430.16, 21,299.06 and 9,380.48

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Solution

The fourth proportional to 15,430.16, 21,299.06 and 9,380.48 is: 12,948.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.16 : 21,299.06 = 9,380.48 : x
  2. Step 2: Convert to fraction form
    15,430.16/21,299.06 = 9,380.48/x
  3. Step 3: Cross multiply
    15,430.16x = 21,299.06 × 9,380.48
  4. Step 4: Simplify right side
    15,430.16x = 199,795,406.35
  5. Step 5: Solve for x
    x = 199,795,406.35/15,430.16
  6. Step 6: Final answer
    x = 12,948.37

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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.