Home / 30,490.14-42,071.32-17,917.32

Finding the Fourth Proportional to 30,490.14, 42,071.32 and 17,917.32

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Solution

The fourth proportional to 30,490.14, 42,071.32 and 17,917.32 is: 24,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.14 : 42,071.32 = 17,917.32 : x
  2. Step 2: Convert to fraction form
    30,490.14/42,071.32 = 17,917.32/x
  3. Step 3: Cross multiply
    30,490.14x = 42,071.32 × 17,917.32
  4. Step 4: Simplify right side
    30,490.14x = 753,805,303.26
  5. Step 5: Solve for x
    x = 753,805,303.26/30,490.14
  6. Step 6: Final answer
    x = 24,722.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.