Home / 13,559.77-20,347.35-7,319.71

Finding the Fourth Proportional to 13,559.77, 20,347.35 and 7,319.71

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Solution

The fourth proportional to 13,559.77, 20,347.35 and 7,319.71 is: 10,983.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.77 : 20,347.35 = 7,319.71 : x
  2. Step 2: Convert to fraction form
    13,559.77/20,347.35 = 7,319.71/x
  3. Step 3: Cross multiply
    13,559.77x = 20,347.35 × 7,319.71
  4. Step 4: Simplify right side
    13,559.77x = 148,936,701.27
  5. Step 5: Solve for x
    x = 148,936,701.27/13,559.77
  6. Step 6: Final answer
    x = 10,983.72

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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.