Home / 18,271.77-25,215.06-9,888.27

Finding the Fourth Proportional to 18,271.77, 25,215.06 and 9,888.27

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Solution

The fourth proportional to 18,271.77, 25,215.06 and 9,888.27 is: 13,645.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.77 : 25,215.06 = 9,888.27 : x
  2. Step 2: Convert to fraction form
    18,271.77/25,215.06 = 9,888.27/x
  3. Step 3: Cross multiply
    18,271.77x = 25,215.06 × 9,888.27
  4. Step 4: Simplify right side
    18,271.77x = 249,333,321.35
  5. Step 5: Solve for x
    x = 249,333,321.35/18,271.77
  6. Step 6: Final answer
    x = 13,645.82

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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.