Home / 21,017.76-31,534.08-9,329.92

Finding the Fourth Proportional to 21,017.76, 31,534.08 and 9,329.92

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Solution

The fourth proportional to 21,017.76, 31,534.08 and 9,329.92 is: 13,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.76 : 31,534.08 = 9,329.92 : x
  2. Step 2: Convert to fraction form
    21,017.76/31,534.08 = 9,329.92/x
  3. Step 3: Cross multiply
    21,017.76x = 31,534.08 × 9,329.92
  4. Step 4: Simplify right side
    21,017.76x = 294,210,443.67
  5. Step 5: Solve for x
    x = 294,210,443.67/21,017.76
  6. Step 6: Final answer
    x = 13,998.18

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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.