Home / 31,004.95-42,782.08-18,258.67

Finding the Fourth Proportional to 31,004.95, 42,782.08 and 18,258.67

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Solution

The fourth proportional to 31,004.95, 42,782.08 and 18,258.67 is: 25,194.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,004.95 : 42,782.08 = 18,258.67 : x
  2. Step 2: Convert to fraction form
    31,004.95/42,782.08 = 18,258.67/x
  3. Step 3: Cross multiply
    31,004.95x = 42,782.08 × 18,258.67
  4. Step 4: Simplify right side
    31,004.95x = 781,143,975.53
  5. Step 5: Solve for x
    x = 781,143,975.53/31,004.95
  6. Step 6: Final answer
    x = 25,194.17

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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.