Home / 13,710.40-20,561.92-6,783.04

Finding the Fourth Proportional to 13,710.40, 20,561.92 and 6,783.04

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Solution

The fourth proportional to 13,710.40, 20,561.92 and 6,783.04 is: 10,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.40 : 20,561.92 = 6,783.04 : x
  2. Step 2: Convert to fraction form
    13,710.40/20,561.92 = 6,783.04/x
  3. Step 3: Cross multiply
    13,710.40x = 20,561.92 × 6,783.04
  4. Step 4: Simplify right side
    13,710.40x = 139,472,325.84
  5. Step 5: Solve for x
    x = 139,472,325.84/13,710.40
  6. Step 6: Final answer
    x = 10,172.74

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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.