Home / 13,712.04-20,559.76-6,678.20

Finding the Fourth Proportional to 13,712.04, 20,559.76 and 6,678.20

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Solution

The fourth proportional to 13,712.04, 20,559.76 and 6,678.20 is: 10,013.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.04 : 20,559.76 = 6,678.20 : x
  2. Step 2: Convert to fraction form
    13,712.04/20,559.76 = 6,678.20/x
  3. Step 3: Cross multiply
    13,712.04x = 20,559.76 × 6,678.20
  4. Step 4: Simplify right side
    13,712.04x = 137,302,189.23
  5. Step 5: Solve for x
    x = 137,302,189.23/13,712.04
  6. Step 6: Final answer
    x = 10,013.26

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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.