Home / 13,851.07-20,776.63-5,531.76

Finding the Fourth Proportional to 13,851.07, 20,776.63 and 5,531.76

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Solution

The fourth proportional to 13,851.07, 20,776.63 and 5,531.76 is: 8,297.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.07 : 20,776.63 = 5,531.76 : x
  2. Step 2: Convert to fraction form
    13,851.07/20,776.63 = 5,531.76/x
  3. Step 3: Cross multiply
    13,851.07x = 20,776.63 × 5,531.76
  4. Step 4: Simplify right side
    13,851.07x = 114,931,330.77
  5. Step 5: Solve for x
    x = 114,931,330.77/13,851.07
  6. Step 6: Final answer
    x = 8,297.65

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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.