Home / 15,431.34-23,138.10-13,586.16

Finding the Fourth Proportional to 15,431.34, 23,138.10 and 13,586.16

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Solution

The fourth proportional to 15,431.34, 23,138.10 and 13,586.16 is: 20,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.34 : 23,138.10 = 13,586.16 : x
  2. Step 2: Convert to fraction form
    15,431.34/23,138.10 = 13,586.16/x
  3. Step 3: Cross multiply
    15,431.34x = 23,138.10 × 13,586.16
  4. Step 4: Simplify right side
    15,431.34x = 314,357,928.70
  5. Step 5: Solve for x
    x = 314,357,928.70/15,431.34
  6. Step 6: Final answer
    x = 20,371.40

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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.