Home / 20,703.10-28,569.42-11,271.64

Finding the Fourth Proportional to 20,703.10, 28,569.42 and 11,271.64

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Solution

The fourth proportional to 20,703.10, 28,569.42 and 11,271.64 is: 15,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.10 : 28,569.42 = 11,271.64 : x
  2. Step 2: Convert to fraction form
    20,703.10/28,569.42 = 11,271.64/x
  3. Step 3: Cross multiply
    20,703.10x = 28,569.42 × 11,271.64
  4. Step 4: Simplify right side
    20,703.10x = 322,024,217.25
  5. Step 5: Solve for x
    x = 322,024,217.25/20,703.10
  6. Step 6: Final answer
    x = 15,554.40

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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.