Home / 13,521.39-20,271.15-4,762.47

Finding the Fourth Proportional to 13,521.39, 20,271.15 and 4,762.47

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Solution

The fourth proportional to 13,521.39, 20,271.15 and 4,762.47 is: 7,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.39 : 20,271.15 = 4,762.47 : x
  2. Step 2: Convert to fraction form
    13,521.39/20,271.15 = 4,762.47/x
  3. Step 3: Cross multiply
    13,521.39x = 20,271.15 × 4,762.47
  4. Step 4: Simplify right side
    13,521.39x = 96,540,743.74
  5. Step 5: Solve for x
    x = 96,540,743.74/13,521.39
  6. Step 6: Final answer
    x = 7,139.85

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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.