Home / 21,250.04-31,875.05-8,761.35

Finding the Fourth Proportional to 21,250.04, 31,875.05 and 8,761.35

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Solution

The fourth proportional to 21,250.04, 31,875.05 and 8,761.35 is: 13,142.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.04 : 31,875.05 = 8,761.35 : x
  2. Step 2: Convert to fraction form
    21,250.04/31,875.05 = 8,761.35/x
  3. Step 3: Cross multiply
    21,250.04x = 31,875.05 × 8,761.35
  4. Step 4: Simplify right side
    21,250.04x = 279,268,425.51
  5. Step 5: Solve for x
    x = 279,268,425.51/21,250.04
  6. Step 6: Final answer
    x = 13,142.02

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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.