Home / 30,140.40-45,159.63-18,258.14

Finding the Fourth Proportional to 30,140.40, 45,159.63 and 18,258.14

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Solution

The fourth proportional to 30,140.40, 45,159.63 and 18,258.14 is: 27,356.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,140.40 : 45,159.63 = 18,258.14 : x
  2. Step 2: Convert to fraction form
    30,140.40/45,159.63 = 18,258.14/x
  3. Step 3: Cross multiply
    30,140.40x = 45,159.63 × 18,258.14
  4. Step 4: Simplify right side
    30,140.40x = 824,530,891.32
  5. Step 5: Solve for x
    x = 824,530,891.32/30,140.40
  6. Step 6: Final answer
    x = 27,356.33

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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.