Home / 13,885.02-19,170.27-12,390.37

Finding the Fourth Proportional to 13,885.02, 19,170.27 and 12,390.37

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Solution

The fourth proportional to 13,885.02, 19,170.27 and 12,390.37 is: 17,106.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.02 : 19,170.27 = 12,390.37 : x
  2. Step 2: Convert to fraction form
    13,885.02/19,170.27 = 12,390.37/x
  3. Step 3: Cross multiply
    13,885.02x = 19,170.27 × 12,390.37
  4. Step 4: Simplify right side
    13,885.02x = 237,526,690.37
  5. Step 5: Solve for x
    x = 237,526,690.37/13,885.02
  6. Step 6: Final answer
    x = 17,106.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.