Home / 55,315.20-83,005.20-20,258.40

Finding the Fourth Proportional to 55,315.20, 83,005.20 and 20,258.40

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Solution

The fourth proportional to 55,315.20, 83,005.20 and 20,258.40 is: 30,399.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,315.20 : 83,005.20 = 20,258.40 : x
  2. Step 2: Convert to fraction form
    55,315.20/83,005.20 = 20,258.40/x
  3. Step 3: Cross multiply
    55,315.20x = 83,005.20 × 20,258.40
  4. Step 4: Simplify right side
    55,315.20x = 1,681,552,543.68
  5. Step 5: Solve for x
    x = 1,681,552,543.68/55,315.20
  6. Step 6: Final answer
    x = 30,399.47

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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.