Home / 21,435.02-29,580.54-11,875.19

Finding the Fourth Proportional to 21,435.02, 29,580.54 and 11,875.19

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Solution

The fourth proportional to 21,435.02, 29,580.54 and 11,875.19 is: 16,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.02 : 29,580.54 = 11,875.19 : x
  2. Step 2: Convert to fraction form
    21,435.02/29,580.54 = 11,875.19/x
  3. Step 3: Cross multiply
    21,435.02x = 29,580.54 × 11,875.19
  4. Step 4: Simplify right side
    21,435.02x = 351,274,532.80
  5. Step 5: Solve for x
    x = 351,274,532.80/21,435.02
  6. Step 6: Final answer
    x = 16,387.88

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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.