Home / 35,388.64-53,083.20-12,915.36

Finding the Fourth Proportional to 35,388.64, 53,083.20 and 12,915.36

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Solution

The fourth proportional to 35,388.64, 53,083.20 and 12,915.36 is: 19,373.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,388.64 : 53,083.20 = 12,915.36 : x
  2. Step 2: Convert to fraction form
    35,388.64/53,083.20 = 12,915.36/x
  3. Step 3: Cross multiply
    35,388.64x = 53,083.20 × 12,915.36
  4. Step 4: Simplify right side
    35,388.64x = 685,588,637.95
  5. Step 5: Solve for x
    x = 685,588,637.95/35,388.64
  6. Step 6: Final answer
    x = 19,373.13

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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.