Home / 30,479.13-45,724.38-13,840.32

Finding the Fourth Proportional to 30,479.13, 45,724.38 and 13,840.32

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Solution

The fourth proportional to 30,479.13, 45,724.38 and 13,840.32 is: 20,763.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.13 : 45,724.38 = 13,840.32 : x
  2. Step 2: Convert to fraction form
    30,479.13/45,724.38 = 13,840.32/x
  3. Step 3: Cross multiply
    30,479.13x = 45,724.38 × 13,840.32
  4. Step 4: Simplify right side
    30,479.13x = 632,840,051.00
  5. Step 5: Solve for x
    x = 632,840,051.00/30,479.13
  6. Step 6: Final answer
    x = 20,763.06

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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.