Home / 20,848.34-28,769.64-11,415.08

Finding the Fourth Proportional to 20,848.34, 28,769.64 and 11,415.08

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Solution

The fourth proportional to 20,848.34, 28,769.64 and 11,415.08 is: 15,752.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.34 : 28,769.64 = 11,415.08 : x
  2. Step 2: Convert to fraction form
    20,848.34/28,769.64 = 11,415.08/x
  3. Step 3: Cross multiply
    20,848.34x = 28,769.64 × 11,415.08
  4. Step 4: Simplify right side
    20,848.34x = 328,407,742.17
  5. Step 5: Solve for x
    x = 328,407,742.17/20,848.34
  6. Step 6: Final answer
    x = 15,752.22

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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.