Home / 55,429.80-83,144.70-20,364.90

Finding the Fourth Proportional to 55,429.80, 83,144.70 and 20,364.90

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Solution

The fourth proportional to 55,429.80, 83,144.70 and 20,364.90 is: 30,547.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,429.80 : 83,144.70 = 20,364.90 : x
  2. Step 2: Convert to fraction form
    55,429.80/83,144.70 = 20,364.90/x
  3. Step 3: Cross multiply
    55,429.80x = 83,144.70 × 20,364.90
  4. Step 4: Simplify right side
    55,429.80x = 1,693,233,501.03
  5. Step 5: Solve for x
    x = 1,693,233,501.03/55,429.80
  6. Step 6: Final answer
    x = 30,547.35

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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.