Home / 21,139.01-31,698.95-6,345.03

Finding the Fourth Proportional to 21,139.01, 31,698.95 and 6,345.03

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Solution

The fourth proportional to 21,139.01, 31,698.95 and 6,345.03 is: 9,514.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139.01 : 31,698.95 = 6,345.03 : x
  2. Step 2: Convert to fraction form
    21,139.01/31,698.95 = 6,345.03/x
  3. Step 3: Cross multiply
    21,139.01x = 31,698.95 × 6,345.03
  4. Step 4: Simplify right side
    21,139.01x = 201,130,788.72
  5. Step 5: Solve for x
    x = 201,130,788.72/21,139.01
  6. Step 6: Final answer
    x = 9,514.68

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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.