Home / 19,720.20-29,580.30-15,313.80

Finding the Fourth Proportional to 19,720.20, 29,580.30 and 15,313.80

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Solution

The fourth proportional to 19,720.20, 29,580.30 and 15,313.80 is: 22,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.20 : 29,580.30 = 15,313.80 : x
  2. Step 2: Convert to fraction form
    19,720.20/29,580.30 = 15,313.80/x
  3. Step 3: Cross multiply
    19,720.20x = 29,580.30 × 15,313.80
  4. Step 4: Simplify right side
    19,720.20x = 452,986,798.14
  5. Step 5: Solve for x
    x = 452,986,798.14/19,720.20
  6. Step 6: Final answer
    x = 22,970.70

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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.