Home / 21,316.16-31,972.08-5,735.36

Finding the Fourth Proportional to 21,316.16, 31,972.08 and 5,735.36

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Solution

The fourth proportional to 21,316.16, 31,972.08 and 5,735.36 is: 8,602.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.16 : 31,972.08 = 5,735.36 : x
  2. Step 2: Convert to fraction form
    21,316.16/31,972.08 = 5,735.36/x
  3. Step 3: Cross multiply
    21,316.16x = 31,972.08 × 5,735.36
  4. Step 4: Simplify right side
    21,316.16x = 183,371,388.75
  5. Step 5: Solve for x
    x = 183,371,388.75/21,316.16
  6. Step 6: Final answer
    x = 8,602.46

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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.