Home / 20,926.08-28,868.40-13,370.40

Finding the Fourth Proportional to 20,926.08, 28,868.40 and 13,370.40

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Solution

The fourth proportional to 20,926.08, 28,868.40 and 13,370.40 is: 18,445.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.08 : 28,868.40 = 13,370.40 : x
  2. Step 2: Convert to fraction form
    20,926.08/28,868.40 = 13,370.40/x
  3. Step 3: Cross multiply
    20,926.08x = 28,868.40 × 13,370.40
  4. Step 4: Simplify right side
    20,926.08x = 385,982,055.36
  5. Step 5: Solve for x
    x = 385,982,055.36/20,926.08
  6. Step 6: Final answer
    x = 18,445.02

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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.