Home / 21,921.91-30,255.02-14,374.60

Finding the Fourth Proportional to 21,921.91, 30,255.02 and 14,374.60

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Solution

The fourth proportional to 21,921.91, 30,255.02 and 14,374.60 is: 19,838.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.91 : 30,255.02 = 14,374.60 : x
  2. Step 2: Convert to fraction form
    21,921.91/30,255.02 = 14,374.60/x
  3. Step 3: Cross multiply
    21,921.91x = 30,255.02 × 14,374.60
  4. Step 4: Simplify right side
    21,921.91x = 434,903,810.49
  5. Step 5: Solve for x
    x = 434,903,810.49/21,921.91
  6. Step 6: Final answer
    x = 19,838.77

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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.