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Finding the Fourth Proportional to 13,283.15, 19,899.14 and 7,443.86

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Solution

The fourth proportional to 13,283.15, 19,899.14 and 7,443.86 is: 11,151.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.15 : 19,899.14 = 7,443.86 : x
  2. Step 2: Convert to fraction form
    13,283.15/19,899.14 = 7,443.86/x
  3. Step 3: Cross multiply
    13,283.15x = 19,899.14 × 7,443.86
  4. Step 4: Simplify right side
    13,283.15x = 148,126,275.57
  5. Step 5: Solve for x
    x = 148,126,275.57/13,283.15
  6. Step 6: Final answer
    x = 11,151.45

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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.