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Finding the Fourth Proportional to 13,587.95, 18,751.41 and 7,926.60

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Solution

The fourth proportional to 13,587.95, 18,751.41 and 7,926.60 is: 10,938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.95 : 18,751.41 = 7,926.60 : x
  2. Step 2: Convert to fraction form
    13,587.95/18,751.41 = 7,926.60/x
  3. Step 3: Cross multiply
    13,587.95x = 18,751.41 × 7,926.60
  4. Step 4: Simplify right side
    13,587.95x = 148,634,926.51
  5. Step 5: Solve for x
    x = 148,634,926.51/13,587.95
  6. Step 6: Final answer
    x = 10,938.73

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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.