Home / 30,258.36-45,398.88-13,613.40

Finding the Fourth Proportional to 30,258.36, 45,398.88 and 13,613.40

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Solution

The fourth proportional to 30,258.36, 45,398.88 and 13,613.40 is: 20,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,258.36 : 45,398.88 = 13,613.40 : x
  2. Step 2: Convert to fraction form
    30,258.36/45,398.88 = 13,613.40/x
  3. Step 3: Cross multiply
    30,258.36x = 45,398.88 × 13,613.40
  4. Step 4: Simplify right side
    30,258.36x = 618,033,112.99
  5. Step 5: Solve for x
    x = 618,033,112.99/30,258.36
  6. Step 6: Final answer
    x = 20,425.20

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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.