Home / 20,485.64-28,266.14-11,533.52

Finding the Fourth Proportional to 20,485.64, 28,266.14 and 11,533.52

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Solution

The fourth proportional to 20,485.64, 28,266.14 and 11,533.52 is: 15,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.64 : 28,266.14 = 11,533.52 : x
  2. Step 2: Convert to fraction form
    20,485.64/28,266.14 = 11,533.52/x
  3. Step 3: Cross multiply
    20,485.64x = 28,266.14 × 11,533.52
  4. Step 4: Simplify right side
    20,485.64x = 326,007,892.01
  5. Step 5: Solve for x
    x = 326,007,892.01/20,485.64
  6. Step 6: Final answer
    x = 15,913.98

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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.