Home / 20,437.79-28,204.47-11,485.26

Finding the Fourth Proportional to 20,437.79, 28,204.47 and 11,485.26

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Solution

The fourth proportional to 20,437.79, 28,204.47 and 11,485.26 is: 15,849.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.79 : 28,204.47 = 11,485.26 : x
  2. Step 2: Convert to fraction form
    20,437.79/28,204.47 = 11,485.26/x
  3. Step 3: Cross multiply
    20,437.79x = 28,204.47 × 11,485.26
  4. Step 4: Simplify right side
    20,437.79x = 323,935,671.11
  5. Step 5: Solve for x
    x = 323,935,671.11/20,437.79
  6. Step 6: Final answer
    x = 15,849.84

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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.