Home / 21,032.16-31,547.20-7,883.52

Finding the Fourth Proportional to 21,032.16, 31,547.20 and 7,883.52

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Solution

The fourth proportional to 21,032.16, 31,547.20 and 7,883.52 is: 11,824.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.16 : 31,547.20 = 7,883.52 : x
  2. Step 2: Convert to fraction form
    21,032.16/31,547.20 = 7,883.52/x
  3. Step 3: Cross multiply
    21,032.16x = 31,547.20 × 7,883.52
  4. Step 4: Simplify right side
    21,032.16x = 248,702,982.14
  5. Step 5: Solve for x
    x = 248,702,982.14/21,032.16
  6. Step 6: Final answer
    x = 11,824.89

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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.