Home / 13,621.04-20,387.80-7,038.24

Finding the Fourth Proportional to 13,621.04, 20,387.80 and 7,038.24

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Solution

The fourth proportional to 13,621.04, 20,387.80 and 7,038.24 is: 10,534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.04 : 20,387.80 = 7,038.24 : x
  2. Step 2: Convert to fraction form
    13,621.04/20,387.80 = 7,038.24/x
  3. Step 3: Cross multiply
    13,621.04x = 20,387.80 × 7,038.24
  4. Step 4: Simplify right side
    13,621.04x = 143,494,229.47
  5. Step 5: Solve for x
    x = 143,494,229.47/13,621.04
  6. Step 6: Final answer
    x = 10,534.75

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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.