Home / 28,181.06-42,214.19-13,345.00

Finding the Fourth Proportional to 28,181.06, 42,214.19 and 13,345.00

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Solution

The fourth proportional to 28,181.06, 42,214.19 and 13,345.00 is: 19,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.06 : 42,214.19 = 13,345.00 : x
  2. Step 2: Convert to fraction form
    28,181.06/42,214.19 = 13,345.00/x
  3. Step 3: Cross multiply
    28,181.06x = 42,214.19 × 13,345.00
  4. Step 4: Simplify right side
    28,181.06x = 563,348,468.28
  5. Step 5: Solve for x
    x = 563,348,468.28/28,181.06
  6. Step 6: Final answer
    x = 19,990.32

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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.