Home / 21,140.06-29,173.21-12,187.52

Finding the Fourth Proportional to 21,140.06, 29,173.21 and 12,187.52

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Solution

The fourth proportional to 21,140.06, 29,173.21 and 12,187.52 is: 16,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.06 : 29,173.21 = 12,187.52 : x
  2. Step 2: Convert to fraction form
    21,140.06/29,173.21 = 12,187.52/x
  3. Step 3: Cross multiply
    21,140.06x = 29,173.21 × 12,187.52
  4. Step 4: Simplify right side
    21,140.06x = 355,549,080.34
  5. Step 5: Solve for x
    x = 355,549,080.34/21,140.06
  6. Step 6: Final answer
    x = 16,818.74

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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.