Home / 13,686.24-20,525.40-4,916.40

Finding the Fourth Proportional to 13,686.24, 20,525.40 and 4,916.40

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Solution

The fourth proportional to 13,686.24, 20,525.40 and 4,916.40 is: 7,373.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.24 : 20,525.40 = 4,916.40 : x
  2. Step 2: Convert to fraction form
    13,686.24/20,525.40 = 4,916.40/x
  3. Step 3: Cross multiply
    13,686.24x = 20,525.40 × 4,916.40
  4. Step 4: Simplify right side
    13,686.24x = 100,911,076.56
  5. Step 5: Solve for x
    x = 100,911,076.56/13,686.24
  6. Step 6: Final answer
    x = 7,373.18

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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.