Home / 20,985.56-31,509.36-14,009.04

Finding the Fourth Proportional to 20,985.56, 31,509.36 and 14,009.04

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Solution

The fourth proportional to 20,985.56, 31,509.36 and 14,009.04 is: 21,034.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.56 : 31,509.36 = 14,009.04 : x
  2. Step 2: Convert to fraction form
    20,985.56/31,509.36 = 14,009.04/x
  3. Step 3: Cross multiply
    20,985.56x = 31,509.36 × 14,009.04
  4. Step 4: Simplify right side
    20,985.56x = 441,415,884.61
  5. Step 5: Solve for x
    x = 441,415,884.61/20,985.56
  6. Step 6: Final answer
    x = 21,034.27

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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.