Home / 28,476.51-42,690.45-20,130.27

Finding the Fourth Proportional to 28,476.51, 42,690.45 and 20,130.27

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Solution

The fourth proportional to 28,476.51, 42,690.45 and 20,130.27 is: 30,178.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.51 : 42,690.45 = 20,130.27 : x
  2. Step 2: Convert to fraction form
    28,476.51/42,690.45 = 20,130.27/x
  3. Step 3: Cross multiply
    28,476.51x = 42,690.45 × 20,130.27
  4. Step 4: Simplify right side
    28,476.51x = 859,370,284.92
  5. Step 5: Solve for x
    x = 859,370,284.92/28,476.51
  6. Step 6: Final answer
    x = 30,178.22

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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.