Home / 20,852.10-28,768.01-13,298.72

Finding the Fourth Proportional to 20,852.10, 28,768.01 and 13,298.72

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Solution

The fourth proportional to 20,852.10, 28,768.01 and 13,298.72 is: 18,347.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.10 : 28,768.01 = 13,298.72 : x
  2. Step 2: Convert to fraction form
    20,852.10/28,768.01 = 13,298.72/x
  3. Step 3: Cross multiply
    20,852.10x = 28,768.01 × 13,298.72
  4. Step 4: Simplify right side
    20,852.10x = 382,577,499.61
  5. Step 5: Solve for x
    x = 382,577,499.61/20,852.10
  6. Step 6: Final answer
    x = 18,347.19

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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.