Home / 21,415.50-29,563.65-14,257.35

Finding the Fourth Proportional to 21,415.50, 29,563.65 and 14,257.35

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Solution

The fourth proportional to 21,415.50, 29,563.65 and 14,257.35 is: 19,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.50 : 29,563.65 = 14,257.35 : x
  2. Step 2: Convert to fraction form
    21,415.50/29,563.65 = 14,257.35/x
  3. Step 3: Cross multiply
    21,415.50x = 29,563.65 × 14,257.35
  4. Step 4: Simplify right side
    21,415.50x = 421,499,305.33
  5. Step 5: Solve for x
    x = 421,499,305.33/21,415.50
  6. Step 6: Final answer
    x = 19,681.97

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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.