Home / 15,431.59-23,138.47-13,586.41

Finding the Fourth Proportional to 15,431.59, 23,138.47 and 13,586.41

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Solution

The fourth proportional to 15,431.59, 23,138.47 and 13,586.41 is: 20,371.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.59 : 23,138.47 = 13,586.41 : x
  2. Step 2: Convert to fraction form
    15,431.59/23,138.47 = 13,586.41/x
  3. Step 3: Cross multiply
    15,431.59x = 23,138.47 × 13,586.41
  4. Step 4: Simplify right side
    15,431.59x = 314,368,740.19
  5. Step 5: Solve for x
    x = 314,368,740.19/15,431.59
  6. Step 6: Final answer
    x = 20,371.77

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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.