Home / 21,017.97-31,525.74-7,699.95

Finding the Fourth Proportional to 21,017.97, 31,525.74 and 7,699.95

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Solution

The fourth proportional to 21,017.97, 31,525.74 and 7,699.95 is: 11,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.97 : 31,525.74 = 7,699.95 : x
  2. Step 2: Convert to fraction form
    21,017.97/31,525.74 = 7,699.95/x
  3. Step 3: Cross multiply
    21,017.97x = 31,525.74 × 7,699.95
  4. Step 4: Simplify right side
    21,017.97x = 242,746,621.71
  5. Step 5: Solve for x
    x = 242,746,621.71/21,017.97
  6. Step 6: Final answer
    x = 11,549.48

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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.