Home / 19,291.12-28,926.96-9,415.60

Finding the Fourth Proportional to 19,291.12, 28,926.96 and 9,415.60

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Solution

The fourth proportional to 19,291.12, 28,926.96 and 9,415.60 is: 14,118.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,291.12 : 28,926.96 = 9,415.60 : x
  2. Step 2: Convert to fraction form
    19,291.12/28,926.96 = 9,415.60/x
  3. Step 3: Cross multiply
    19,291.12x = 28,926.96 × 9,415.60
  4. Step 4: Simplify right side
    19,291.12x = 272,364,684.58
  5. Step 5: Solve for x
    x = 272,364,684.58/19,291.12
  6. Step 6: Final answer
    x = 14,118.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.