Home / 18,935.64-28,402.56-6,455.16

Finding the Fourth Proportional to 18,935.64, 28,402.56 and 6,455.16

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Solution

The fourth proportional to 18,935.64, 28,402.56 and 6,455.16 is: 9,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.64 : 28,402.56 = 6,455.16 : x
  2. Step 2: Convert to fraction form
    18,935.64/28,402.56 = 6,455.16/x
  3. Step 3: Cross multiply
    18,935.64x = 28,402.56 × 6,455.16
  4. Step 4: Simplify right side
    18,935.64x = 183,343,069.21
  5. Step 5: Solve for x
    x = 183,343,069.21/18,935.64
  6. Step 6: Final answer
    x = 9,682.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.