Home / 14,139.48-21,201.93-7,479.57

Finding the Fourth Proportional to 14,139.48, 21,201.93 and 7,479.57

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Solution

The fourth proportional to 14,139.48, 21,201.93 and 7,479.57 is: 11,215.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.48 : 21,201.93 = 7,479.57 : x
  2. Step 2: Convert to fraction form
    14,139.48/21,201.93 = 7,479.57/x
  3. Step 3: Cross multiply
    14,139.48x = 21,201.93 × 7,479.57
  4. Step 4: Simplify right side
    14,139.48x = 158,581,319.57
  5. Step 5: Solve for x
    x = 158,581,319.57/14,139.48
  6. Step 6: Final answer
    x = 11,215.50

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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.