Home / 20,848.56-28,771.02-11,417.70

Finding the Fourth Proportional to 20,848.56, 28,771.02 and 11,417.70

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Solution

The fourth proportional to 20,848.56, 28,771.02 and 11,417.70 is: 15,756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.56 : 28,771.02 = 11,417.70 : x
  2. Step 2: Convert to fraction form
    20,848.56/28,771.02 = 11,417.70/x
  3. Step 3: Cross multiply
    20,848.56x = 28,771.02 × 11,417.70
  4. Step 4: Simplify right side
    20,848.56x = 328,498,875.05
  5. Step 5: Solve for x
    x = 328,498,875.05/20,848.56
  6. Step 6: Final answer
    x = 15,756.43

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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.