Home / 19,129.31-28,656.59-10,784.08

Finding the Fourth Proportional to 19,129.31, 28,656.59 and 10,784.08

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Solution

The fourth proportional to 19,129.31, 28,656.59 and 10,784.08 is: 16,155.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.31 : 28,656.59 = 10,784.08 : x
  2. Step 2: Convert to fraction form
    19,129.31/28,656.59 = 10,784.08/x
  3. Step 3: Cross multiply
    19,129.31x = 28,656.59 × 10,784.08
  4. Step 4: Simplify right side
    19,129.31x = 309,034,914.41
  5. Step 5: Solve for x
    x = 309,034,914.41/19,129.31
  6. Step 6: Final answer
    x = 16,155.05

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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.