Home / 21,068.37-29,077.16-20,376.05

Finding the Fourth Proportional to 21,068.37, 29,077.16 and 20,376.05

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Solution

The fourth proportional to 21,068.37, 29,077.16 and 20,376.05 is: 28,121.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.37 : 29,077.16 = 20,376.05 : x
  2. Step 2: Convert to fraction form
    21,068.37/29,077.16 = 20,376.05/x
  3. Step 3: Cross multiply
    21,068.37x = 29,077.16 × 20,376.05
  4. Step 4: Simplify right side
    21,068.37x = 592,477,418.75
  5. Step 5: Solve for x
    x = 592,477,418.75/21,068.37
  6. Step 6: Final answer
    x = 28,121.65

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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.