Home / 21,036.36-31,558.26-7,182.12

Finding the Fourth Proportional to 21,036.36, 31,558.26 and 7,182.12

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Solution

The fourth proportional to 21,036.36, 31,558.26 and 7,182.12 is: 10,774.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.36 : 31,558.26 = 7,182.12 : x
  2. Step 2: Convert to fraction form
    21,036.36/31,558.26 = 7,182.12/x
  3. Step 3: Cross multiply
    21,036.36x = 31,558.26 × 7,182.12
  4. Step 4: Simplify right side
    21,036.36x = 226,655,210.31
  5. Step 5: Solve for x
    x = 226,655,210.31/21,036.36
  6. Step 6: Final answer
    x = 10,774.45

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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.