Home / 13,515.77-20,271.72-4,749.50

Finding the Fourth Proportional to 13,515.77, 20,271.72 and 4,749.50

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Solution

The fourth proportional to 13,515.77, 20,271.72 and 4,749.50 is: 7,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.77 : 20,271.72 = 4,749.50 : x
  2. Step 2: Convert to fraction form
    13,515.77/20,271.72 = 4,749.50/x
  3. Step 3: Cross multiply
    13,515.77x = 20,271.72 × 4,749.50
  4. Step 4: Simplify right side
    13,515.77x = 96,280,534.14
  5. Step 5: Solve for x
    x = 96,280,534.14/13,515.77
  6. Step 6: Final answer
    x = 7,123.57

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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.