Home / 14,455.20-19,870.80-13,029.60

Finding the Fourth Proportional to 14,455.20, 19,870.80 and 13,029.60

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Solution

The fourth proportional to 14,455.20, 19,870.80 and 13,029.60 is: 17,911.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,455.20 : 19,870.80 = 13,029.60 : x
  2. Step 2: Convert to fraction form
    14,455.20/19,870.80 = 13,029.60/x
  3. Step 3: Cross multiply
    14,455.20x = 19,870.80 × 13,029.60
  4. Step 4: Simplify right side
    14,455.20x = 258,908,575.68
  5. Step 5: Solve for x
    x = 258,908,575.68/14,455.20
  6. Step 6: Final answer
    x = 17,911.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.