Home / 21,023.84-29,014.95-15,709.43

Finding the Fourth Proportional to 21,023.84, 29,014.95 and 15,709.43

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Solution

The fourth proportional to 21,023.84, 29,014.95 and 15,709.43 is: 21,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.84 : 29,014.95 = 15,709.43 : x
  2. Step 2: Convert to fraction form
    21,023.84/29,014.95 = 15,709.43/x
  3. Step 3: Cross multiply
    21,023.84x = 29,014.95 × 15,709.43
  4. Step 4: Simplify right side
    21,023.84x = 455,808,180.90
  5. Step 5: Solve for x
    x = 455,808,180.90/21,023.84
  6. Step 6: Final answer
    x = 21,680.54

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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.