Home / 15,254.70-21,050.43-8,540.28

Finding the Fourth Proportional to 15,254.70, 21,050.43 and 8,540.28

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Solution

The fourth proportional to 15,254.70, 21,050.43 and 8,540.28 is: 11,785.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,254.70 : 21,050.43 = 8,540.28 : x
  2. Step 2: Convert to fraction form
    15,254.70/21,050.43 = 8,540.28/x
  3. Step 3: Cross multiply
    15,254.70x = 21,050.43 × 8,540.28
  4. Step 4: Simplify right side
    15,254.70x = 179,776,566.32
  5. Step 5: Solve for x
    x = 179,776,566.32/15,254.70
  6. Step 6: Final answer
    x = 11,785.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.