Home / 21,628.77-32,443.11-9,145.50

Finding the Fourth Proportional to 21,628.77, 32,443.11 and 9,145.50

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Solution

The fourth proportional to 21,628.77, 32,443.11 and 9,145.50 is: 13,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.77 : 32,443.11 = 9,145.50 : x
  2. Step 2: Convert to fraction form
    21,628.77/32,443.11 = 9,145.50/x
  3. Step 3: Cross multiply
    21,628.77x = 32,443.11 × 9,145.50
  4. Step 4: Simplify right side
    21,628.77x = 296,708,462.51
  5. Step 5: Solve for x
    x = 296,708,462.51/21,628.77
  6. Step 6: Final answer
    x = 13,718.23

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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.