Home / 20,009.20-29,970.60-13,010.80

Finding the Fourth Proportional to 20,009.20, 29,970.60 and 13,010.80

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Solution

The fourth proportional to 20,009.20, 29,970.60 and 13,010.80 is: 19,488.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.20 : 29,970.60 = 13,010.80 : x
  2. Step 2: Convert to fraction form
    20,009.20/29,970.60 = 13,010.80/x
  3. Step 3: Cross multiply
    20,009.20x = 29,970.60 × 13,010.80
  4. Step 4: Simplify right side
    20,009.20x = 389,941,482.48
  5. Step 5: Solve for x
    x = 389,941,482.48/20,009.20
  6. Step 6: Final answer
    x = 19,488.11

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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.