Home / 21,312.45-31,968.69-11,514.03

Finding the Fourth Proportional to 21,312.45, 31,968.69 and 11,514.03

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Solution

The fourth proportional to 21,312.45, 31,968.69 and 11,514.03 is: 17,271.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.45 : 31,968.69 = 11,514.03 : x
  2. Step 2: Convert to fraction form
    21,312.45/31,968.69 = 11,514.03/x
  3. Step 3: Cross multiply
    21,312.45x = 31,968.69 × 11,514.03
  4. Step 4: Simplify right side
    21,312.45x = 368,088,455.72
  5. Step 5: Solve for x
    x = 368,088,455.72/21,312.45
  6. Step 6: Final answer
    x = 17,271.05

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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.