Home / 39,340.13-54,289.69-21,434.67

Finding the Fourth Proportional to 39,340.13, 54,289.69 and 21,434.67

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Solution

The fourth proportional to 39,340.13, 54,289.69 and 21,434.67 is: 29,580.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.13 : 54,289.69 = 21,434.67 : x
  2. Step 2: Convert to fraction form
    39,340.13/54,289.69 = 21,434.67/x
  3. Step 3: Cross multiply
    39,340.13x = 54,289.69 × 21,434.67
  4. Step 4: Simplify right side
    39,340.13x = 1,163,681,535.97
  5. Step 5: Solve for x
    x = 1,163,681,535.97/39,340.13
  6. Step 6: Final answer
    x = 29,580.02

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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.