Home / 21,036.93-31,547.19-7,882.12

Finding the Fourth Proportional to 21,036.93, 31,547.19 and 7,882.12

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Solution

The fourth proportional to 21,036.93, 31,547.19 and 7,882.12 is: 11,820.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.93 : 31,547.19 = 7,882.12 : x
  2. Step 2: Convert to fraction form
    21,036.93/31,547.19 = 7,882.12/x
  3. Step 3: Cross multiply
    21,036.93x = 31,547.19 × 7,882.12
  4. Step 4: Simplify right side
    21,036.93x = 248,658,697.83
  5. Step 5: Solve for x
    x = 248,658,697.83/21,036.93
  6. Step 6: Final answer
    x = 11,820.11

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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.