Home / 21,014.48-31,521.72-8,701.52

Finding the Fourth Proportional to 21,014.48, 31,521.72 and 8,701.52

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Solution

The fourth proportional to 21,014.48, 31,521.72 and 8,701.52 is: 13,052.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.48 : 31,521.72 = 8,701.52 : x
  2. Step 2: Convert to fraction form
    21,014.48/31,521.72 = 8,701.52/x
  3. Step 3: Cross multiply
    21,014.48x = 31,521.72 × 8,701.52
  4. Step 4: Simplify right side
    21,014.48x = 274,286,877.01
  5. Step 5: Solve for x
    x = 274,286,877.01/21,014.48
  6. Step 6: Final answer
    x = 13,052.28

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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.