Home / 28,260.48-42,420.24-20,873.28

Finding the Fourth Proportional to 28,260.48, 42,420.24 and 20,873.28

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Solution

The fourth proportional to 28,260.48, 42,420.24 and 20,873.28 is: 31,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.48 : 42,420.24 = 20,873.28 : x
  2. Step 2: Convert to fraction form
    28,260.48/42,420.24 = 20,873.28/x
  3. Step 3: Cross multiply
    28,260.48x = 42,420.24 × 20,873.28
  4. Step 4: Simplify right side
    28,260.48x = 885,449,547.19
  5. Step 5: Solve for x
    x = 885,449,547.19/28,260.48
  6. Step 6: Final answer
    x = 31,331.72

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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.