Home / 21,307.02-29,403.72-11,875.38

Finding the Fourth Proportional to 21,307.02, 29,403.72 and 11,875.38

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Solution

The fourth proportional to 21,307.02, 29,403.72 and 11,875.38 is: 16,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.02 : 29,403.72 = 11,875.38 : x
  2. Step 2: Convert to fraction form
    21,307.02/29,403.72 = 11,875.38/x
  3. Step 3: Cross multiply
    21,307.02x = 29,403.72 × 11,875.38
  4. Step 4: Simplify right side
    21,307.02x = 349,180,348.41
  5. Step 5: Solve for x
    x = 349,180,348.41/21,307.02
  6. Step 6: Final answer
    x = 16,388.04

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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.