Home / 20,707.40-31,058.70-5,918.60

Finding the Fourth Proportional to 20,707.40, 31,058.70 and 5,918.60

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Solution

The fourth proportional to 20,707.40, 31,058.70 and 5,918.60 is: 8,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.40 : 31,058.70 = 5,918.60 : x
  2. Step 2: Convert to fraction form
    20,707.40/31,058.70 = 5,918.60/x
  3. Step 3: Cross multiply
    20,707.40x = 31,058.70 × 5,918.60
  4. Step 4: Simplify right side
    20,707.40x = 183,824,021.82
  5. Step 5: Solve for x
    x = 183,824,021.82/20,707.40
  6. Step 6: Final answer
    x = 8,877.21

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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.