Home / 30,181.79-45,257.49-10,455.05

Finding the Fourth Proportional to 30,181.79, 45,257.49 and 10,455.05

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Solution

The fourth proportional to 30,181.79, 45,257.49 and 10,455.05 is: 15,677.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,181.79 : 45,257.49 = 10,455.05 : x
  2. Step 2: Convert to fraction form
    30,181.79/45,257.49 = 10,455.05/x
  3. Step 3: Cross multiply
    30,181.79x = 45,257.49 × 10,455.05
  4. Step 4: Simplify right side
    30,181.79x = 473,169,320.82
  5. Step 5: Solve for x
    x = 473,169,320.82/30,181.79
  6. Step 6: Final answer
    x = 15,677.31

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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.