Home / 14,420.76-19,903.74-9,112.20

Finding the Fourth Proportional to 14,420.76, 19,903.74 and 9,112.20

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Solution

The fourth proportional to 14,420.76, 19,903.74 and 9,112.20 is: 12,576.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.76 : 19,903.74 = 9,112.20 : x
  2. Step 2: Convert to fraction form
    14,420.76/19,903.74 = 9,112.20/x
  3. Step 3: Cross multiply
    14,420.76x = 19,903.74 × 9,112.20
  4. Step 4: Simplify right side
    14,420.76x = 181,366,859.63
  5. Step 5: Solve for x
    x = 181,366,859.63/14,420.76
  6. Step 6: Final answer
    x = 12,576.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.