Home / 28,058.68-38,703.90-16,720.72

Finding the Fourth Proportional to 28,058.68, 38,703.90 and 16,720.72

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Solution

The fourth proportional to 28,058.68, 38,703.90 and 16,720.72 is: 23,064.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,058.68 : 38,703.90 = 16,720.72 : x
  2. Step 2: Convert to fraction form
    28,058.68/38,703.90 = 16,720.72/x
  3. Step 3: Cross multiply
    28,058.68x = 38,703.90 × 16,720.72
  4. Step 4: Simplify right side
    28,058.68x = 647,157,074.81
  5. Step 5: Solve for x
    x = 647,157,074.81/28,058.68
  6. Step 6: Final answer
    x = 23,064.42

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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.