Home / 15,687.21-23,392.43-13,509.93

Finding the Fourth Proportional to 15,687.21, 23,392.43 and 13,509.93

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Solution

The fourth proportional to 15,687.21, 23,392.43 and 13,509.93 is: 20,145.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.21 : 23,392.43 = 13,509.93 : x
  2. Step 2: Convert to fraction form
    15,687.21/23,392.43 = 13,509.93/x
  3. Step 3: Cross multiply
    15,687.21x = 23,392.43 × 13,509.93
  4. Step 4: Simplify right side
    15,687.21x = 316,030,125.60
  5. Step 5: Solve for x
    x = 316,030,125.60/15,687.21
  6. Step 6: Final answer
    x = 20,145.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.