Home / 9,945.10-14,929.80-9,872.20

Finding the Fourth Proportional to 9,945.10, 14,929.80 and 9,872.20

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Solution

The fourth proportional to 9,945.10, 14,929.80 and 9,872.20 is: 14,820.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,945.10 : 14,929.80 = 9,872.20 : x
  2. Step 2: Convert to fraction form
    9,945.10/14,929.80 = 9,872.20/x
  3. Step 3: Cross multiply
    9,945.10x = 14,929.80 × 9,872.20
  4. Step 4: Simplify right side
    9,945.10x = 147,389,971.56
  5. Step 5: Solve for x
    x = 147,389,971.56/9,945.10
  6. Step 6: Final answer
    x = 14,820.36

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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.