Home / 21,325.58-31,999.18-14,385.50

Finding the Fourth Proportional to 21,325.58, 31,999.18 and 14,385.50

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Solution

The fourth proportional to 21,325.58, 31,999.18 and 14,385.50 is: 21,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.58 : 31,999.18 = 14,385.50 : x
  2. Step 2: Convert to fraction form
    21,325.58/31,999.18 = 14,385.50/x
  3. Step 3: Cross multiply
    21,325.58x = 31,999.18 × 14,385.50
  4. Step 4: Simplify right side
    21,325.58x = 460,324,203.89
  5. Step 5: Solve for x
    x = 460,324,203.89/21,325.58
  6. Step 6: Final answer
    x = 21,585.54

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1.5x scale

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.