Home / 20,970.01-28,939.41-12,019.24

Finding the Fourth Proportional to 20,970.01, 28,939.41 and 12,019.24

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Solution

The fourth proportional to 20,970.01, 28,939.41 and 12,019.24 is: 16,587.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.01 : 28,939.41 = 12,019.24 : x
  2. Step 2: Convert to fraction form
    20,970.01/28,939.41 = 12,019.24/x
  3. Step 3: Cross multiply
    20,970.01x = 28,939.41 × 12,019.24
  4. Step 4: Simplify right side
    20,970.01x = 347,829,714.25
  5. Step 5: Solve for x
    x = 347,829,714.25/20,970.01
  6. Step 6: Final answer
    x = 16,587.01

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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.