Home / 9,888.19-13,645.47-5,411.89

Finding the Fourth Proportional to 9,888.19, 13,645.47 and 5,411.89

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Solution

The fourth proportional to 9,888.19, 13,645.47 and 5,411.89 is: 7,468.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.19 : 13,645.47 = 5,411.89 : x
  2. Step 2: Convert to fraction form
    9,888.19/13,645.47 = 5,411.89/x
  3. Step 3: Cross multiply
    9,888.19x = 13,645.47 × 5,411.89
  4. Step 4: Simplify right side
    9,888.19x = 73,847,782.64
  5. Step 5: Solve for x
    x = 73,847,782.64/9,888.19
  6. Step 6: Final answer
    x = 7,468.28

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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.