Home / 9,720.29-13,415.30-5,472.18

Finding the Fourth Proportional to 9,720.29, 13,415.30 and 5,472.18

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Solution

The fourth proportional to 9,720.29, 13,415.30 and 5,472.18 is: 7,552.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.29 : 13,415.30 = 5,472.18 : x
  2. Step 2: Convert to fraction form
    9,720.29/13,415.30 = 5,472.18/x
  3. Step 3: Cross multiply
    9,720.29x = 13,415.30 × 5,472.18
  4. Step 4: Simplify right side
    9,720.29x = 73,410,929.51
  5. Step 5: Solve for x
    x = 73,410,929.51/9,720.29
  6. Step 6: Final answer
    x = 7,552.34

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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.