Home / 42,455.39-63,683.64-18,434.16

Finding the Fourth Proportional to 42,455.39, 63,683.64 and 18,434.16

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Solution

The fourth proportional to 42,455.39, 63,683.64 and 18,434.16 is: 27,651.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,455.39 : 63,683.64 = 18,434.16 : x
  2. Step 2: Convert to fraction form
    42,455.39/63,683.64 = 18,434.16/x
  3. Step 3: Cross multiply
    42,455.39x = 63,683.64 × 18,434.16
  4. Step 4: Simplify right side
    42,455.39x = 1,173,954,409.14
  5. Step 5: Solve for x
    x = 1,173,954,409.14/42,455.39
  6. Step 6: Final answer
    x = 27,651.48

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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.