Home / 18,421.06-25,428.72-13,946.08

Finding the Fourth Proportional to 18,421.06, 25,428.72 and 13,946.08

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Solution

The fourth proportional to 18,421.06, 25,428.72 and 13,946.08 is: 19,251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.06 : 25,428.72 = 13,946.08 : x
  2. Step 2: Convert to fraction form
    18,421.06/25,428.72 = 13,946.08/x
  3. Step 3: Cross multiply
    18,421.06x = 25,428.72 × 13,946.08
  4. Step 4: Simplify right side
    18,421.06x = 354,630,963.42
  5. Step 5: Solve for x
    x = 354,630,963.42/18,421.06
  6. Step 6: Final answer
    x = 19,251.39

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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.