Home / 21,478.84-29,627.16-15,519.26

Finding the Fourth Proportional to 21,478.84, 29,627.16 and 15,519.26

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Solution

The fourth proportional to 21,478.84, 29,627.16 and 15,519.26 is: 21,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.84 : 29,627.16 = 15,519.26 : x
  2. Step 2: Convert to fraction form
    21,478.84/29,627.16 = 15,519.26/x
  3. Step 3: Cross multiply
    21,478.84x = 29,627.16 × 15,519.26
  4. Step 4: Simplify right side
    21,478.84x = 459,791,599.10
  5. Step 5: Solve for x
    x = 459,791,599.10/21,478.84
  6. Step 6: Final answer
    x = 21,406.72

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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.