Home / 21,782.64-30,069.20-14,718.63

Finding the Fourth Proportional to 21,782.64, 30,069.20 and 14,718.63

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Solution

The fourth proportional to 21,782.64, 30,069.20 and 14,718.63 is: 20,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,782.64 : 30,069.20 = 14,718.63 : x
  2. Step 2: Convert to fraction form
    21,782.64/30,069.20 = 14,718.63/x
  3. Step 3: Cross multiply
    21,782.64x = 30,069.20 × 14,718.63
  4. Step 4: Simplify right side
    21,782.64x = 442,577,465.99
  5. Step 5: Solve for x
    x = 442,577,465.99/21,782.64
  6. Step 6: Final answer
    x = 20,317.90

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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.