Home / 13,888.08-20,817.54-5,117.40

Finding the Fourth Proportional to 13,888.08, 20,817.54 and 5,117.40

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Solution

The fourth proportional to 13,888.08, 20,817.54 and 5,117.40 is: 7,670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.08 : 20,817.54 = 5,117.40 : x
  2. Step 2: Convert to fraction form
    13,888.08/20,817.54 = 5,117.40/x
  3. Step 3: Cross multiply
    13,888.08x = 20,817.54 × 5,117.40
  4. Step 4: Simplify right side
    13,888.08x = 106,531,679.20
  5. Step 5: Solve for x
    x = 106,531,679.20/13,888.08
  6. Step 6: Final answer
    x = 7,670.73

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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.