Home / 55,505.40-83,258.10-20,437.80

Finding the Fourth Proportional to 55,505.40, 83,258.10 and 20,437.80

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Solution

The fourth proportional to 55,505.40, 83,258.10 and 20,437.80 is: 30,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,505.40 : 83,258.10 = 20,437.80 : x
  2. Step 2: Convert to fraction form
    55,505.40/83,258.10 = 20,437.80/x
  3. Step 3: Cross multiply
    55,505.40x = 83,258.10 × 20,437.80
  4. Step 4: Simplify right side
    55,505.40x = 1,701,612,396.18
  5. Step 5: Solve for x
    x = 1,701,612,396.18/55,505.40
  6. Step 6: Final answer
    x = 30,656.70

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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.