Home / 30,740.96-42,422.66-17,312.45

Finding the Fourth Proportional to 30,740.96, 42,422.66 and 17,312.45

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Solution

The fourth proportional to 30,740.96, 42,422.66 and 17,312.45 is: 23,891.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,740.96 : 42,422.66 = 17,312.45 : x
  2. Step 2: Convert to fraction form
    30,740.96/42,422.66 = 17,312.45/x
  3. Step 3: Cross multiply
    30,740.96x = 42,422.66 × 17,312.45
  4. Step 4: Simplify right side
    30,740.96x = 734,439,881.44
  5. Step 5: Solve for x
    x = 734,439,881.44/30,740.96
  6. Step 6: Final answer
    x = 23,891.25

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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.