Home / 31,157.48-42,998.34-17,011.40

Finding the Fourth Proportional to 31,157.48, 42,998.34 and 17,011.40

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Solution

The fourth proportional to 31,157.48, 42,998.34 and 17,011.40 is: 23,476.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,157.48 : 42,998.34 = 17,011.40 : x
  2. Step 2: Convert to fraction form
    31,157.48/42,998.34 = 17,011.40/x
  3. Step 3: Cross multiply
    31,157.48x = 42,998.34 × 17,011.40
  4. Step 4: Simplify right side
    31,157.48x = 731,461,961.08
  5. Step 5: Solve for x
    x = 731,461,961.08/31,157.48
  6. Step 6: Final answer
    x = 23,476.29

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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.