Home / 15,729.21-21,703.01-9,014.31

Finding the Fourth Proportional to 15,729.21, 21,703.01 and 9,014.31

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Solution

The fourth proportional to 15,729.21, 21,703.01 and 9,014.31 is: 12,437.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.21 : 21,703.01 = 9,014.31 : x
  2. Step 2: Convert to fraction form
    15,729.21/21,703.01 = 9,014.31/x
  3. Step 3: Cross multiply
    15,729.21x = 21,703.01 × 9,014.31
  4. Step 4: Simplify right side
    15,729.21x = 195,637,615.00
  5. Step 5: Solve for x
    x = 195,637,615.00/15,729.21
  6. Step 6: Final answer
    x = 12,437.85

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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.