Home / 13,685.10-20,527.65-4,920.90

Finding the Fourth Proportional to 13,685.10, 20,527.65 and 4,920.90

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Solution

The fourth proportional to 13,685.10, 20,527.65 and 4,920.90 is: 7,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.10 : 20,527.65 = 4,920.90 : x
  2. Step 2: Convert to fraction form
    13,685.10/20,527.65 = 4,920.90/x
  3. Step 3: Cross multiply
    13,685.10x = 20,527.65 × 4,920.90
  4. Step 4: Simplify right side
    13,685.10x = 101,014,512.89
  5. Step 5: Solve for x
    x = 101,014,512.89/13,685.10
  6. Step 6: Final answer
    x = 7,381.35

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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.