Home / 21,060.12-31,590.09-8,577.36

Finding the Fourth Proportional to 21,060.12, 31,590.09 and 8,577.36

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Solution

The fourth proportional to 21,060.12, 31,590.09 and 8,577.36 is: 12,866.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.12 : 31,590.09 = 8,577.36 : x
  2. Step 2: Convert to fraction form
    21,060.12/31,590.09 = 8,577.36/x
  3. Step 3: Cross multiply
    21,060.12x = 31,590.09 × 8,577.36
  4. Step 4: Simplify right side
    21,060.12x = 270,959,574.36
  5. Step 5: Solve for x
    x = 270,959,574.36/21,060.12
  6. Step 6: Final answer
    x = 12,866.00

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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.