Home / 13,955.74-19,221.48-12,904.72

Finding the Fourth Proportional to 13,955.74, 19,221.48 and 12,904.72

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Solution

The fourth proportional to 13,955.74, 19,221.48 and 12,904.72 is: 17,773.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.74 : 19,221.48 = 12,904.72 : x
  2. Step 2: Convert to fraction form
    13,955.74/19,221.48 = 12,904.72/x
  3. Step 3: Cross multiply
    13,955.74x = 19,221.48 × 12,904.72
  4. Step 4: Simplify right side
    13,955.74x = 248,047,817.39
  5. Step 5: Solve for x
    x = 248,047,817.39/13,955.74
  6. Step 6: Final answer
    x = 17,773.89

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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.