Home / 21,164.02-31,752.60-8,685.05

Finding the Fourth Proportional to 21,164.02, 31,752.60 and 8,685.05

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Solution

The fourth proportional to 21,164.02, 31,752.60 and 8,685.05 is: 13,030.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.02 : 31,752.60 = 8,685.05 : x
  2. Step 2: Convert to fraction form
    21,164.02/31,752.60 = 8,685.05/x
  3. Step 3: Cross multiply
    21,164.02x = 31,752.60 × 8,685.05
  4. Step 4: Simplify right side
    21,164.02x = 275,772,918.63
  5. Step 5: Solve for x
    x = 275,772,918.63/21,164.02
  6. Step 6: Final answer
    x = 13,030.27

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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.