Home / 20,804.90-28,710.72-11,373.46

Finding the Fourth Proportional to 20,804.90, 28,710.72 and 11,373.46

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Solution

The fourth proportional to 20,804.90, 28,710.72 and 11,373.46 is: 15,695.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.90 : 28,710.72 = 11,373.46 : x
  2. Step 2: Convert to fraction form
    20,804.90/28,710.72 = 11,373.46/x
  3. Step 3: Cross multiply
    20,804.90x = 28,710.72 × 11,373.46
  4. Step 4: Simplify right side
    20,804.90x = 326,540,225.49
  5. Step 5: Solve for x
    x = 326,540,225.49/20,804.90
  6. Step 6: Final answer
    x = 15,695.35

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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.