Home / 20,740.52-28,622.48-12,675.48

Finding the Fourth Proportional to 20,740.52, 28,622.48 and 12,675.48

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Solution

The fourth proportional to 20,740.52, 28,622.48 and 12,675.48 is: 17,492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.52 : 28,622.48 = 12,675.48 : x
  2. Step 2: Convert to fraction form
    20,740.52/28,622.48 = 12,675.48/x
  3. Step 3: Cross multiply
    20,740.52x = 28,622.48 × 12,675.48
  4. Step 4: Simplify right side
    20,740.52x = 362,803,672.79
  5. Step 5: Solve for x
    x = 362,803,672.79/20,740.52
  6. Step 6: Final answer
    x = 17,492.51

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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.