Home / 13,335.31-19,996.44-7,790.05

Finding the Fourth Proportional to 13,335.31, 19,996.44 and 7,790.05

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Solution

The fourth proportional to 13,335.31, 19,996.44 and 7,790.05 is: 11,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.31 : 19,996.44 = 7,790.05 : x
  2. Step 2: Convert to fraction form
    13,335.31/19,996.44 = 7,790.05/x
  3. Step 3: Cross multiply
    13,335.31x = 19,996.44 × 7,790.05
  4. Step 4: Simplify right side
    13,335.31x = 155,773,267.42
  5. Step 5: Solve for x
    x = 155,773,267.42/13,335.31
  6. Step 6: Final answer
    x = 11,681.26

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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.