Home / 34,720.68-47,915.45-21,284.20

Finding the Fourth Proportional to 34,720.68, 47,915.45 and 21,284.20

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Solution

The fourth proportional to 34,720.68, 47,915.45 and 21,284.20 is: 29,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,720.68 : 47,915.45 = 21,284.20 : x
  2. Step 2: Convert to fraction form
    34,720.68/47,915.45 = 21,284.20/x
  3. Step 3: Cross multiply
    34,720.68x = 47,915.45 × 21,284.20
  4. Step 4: Simplify right side
    34,720.68x = 1,019,842,054.18
  5. Step 5: Solve for x
    x = 1,019,842,054.18/34,720.68
  6. Step 6: Final answer
    x = 29,372.75

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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.