Home / 21,218.77-31,797.98-15,628.15

Finding the Fourth Proportional to 21,218.77, 31,797.98 and 15,628.15

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Solution

The fourth proportional to 21,218.77, 31,797.98 and 15,628.15 is: 23,420.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.77 : 31,797.98 = 15,628.15 : x
  2. Step 2: Convert to fraction form
    21,218.77/31,797.98 = 15,628.15/x
  3. Step 3: Cross multiply
    21,218.77x = 31,797.98 × 15,628.15
  4. Step 4: Simplify right side
    21,218.77x = 496,943,621.35
  5. Step 5: Solve for x
    x = 496,943,621.35/21,218.77
  6. Step 6: Final answer
    x = 23,420.00

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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.