Home / 35,915.78-53,866.76-21,107.40

Finding the Fourth Proportional to 35,915.78, 53,866.76 and 21,107.40

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Solution

The fourth proportional to 35,915.78, 53,866.76 and 21,107.40 is: 31,657.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,915.78 : 53,866.76 = 21,107.40 : x
  2. Step 2: Convert to fraction form
    35,915.78/53,866.76 = 21,107.40/x
  3. Step 3: Cross multiply
    35,915.78x = 53,866.76 × 21,107.40
  4. Step 4: Simplify right side
    35,915.78x = 1,136,987,250.02
  5. Step 5: Solve for x
    x = 1,136,987,250.02/35,915.78
  6. Step 6: Final answer
    x = 31,657.04

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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.