Home / 13,642.90-20,477.34-7,073.80

Finding the Fourth Proportional to 13,642.90, 20,477.34 and 7,073.80

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Solution

The fourth proportional to 13,642.90, 20,477.34 and 7,073.80 is: 10,617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.90 : 20,477.34 = 7,073.80 : x
  2. Step 2: Convert to fraction form
    13,642.90/20,477.34 = 7,073.80/x
  3. Step 3: Cross multiply
    13,642.90x = 20,477.34 × 7,073.80
  4. Step 4: Simplify right side
    13,642.90x = 144,852,607.69
  5. Step 5: Solve for x
    x = 144,852,607.69/13,642.90
  6. Step 6: Final answer
    x = 10,617.44

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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.