Home / 30,981.51-42,754.37-16,834.32

Finding the Fourth Proportional to 30,981.51, 42,754.37 and 16,834.32

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Solution

The fourth proportional to 30,981.51, 42,754.37 and 16,834.32 is: 23,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.51 : 42,754.37 = 16,834.32 : x
  2. Step 2: Convert to fraction form
    30,981.51/42,754.37 = 16,834.32/x
  3. Step 3: Cross multiply
    30,981.51x = 42,754.37 × 16,834.32
  4. Step 4: Simplify right side
    30,981.51x = 719,740,661.81
  5. Step 5: Solve for x
    x = 719,740,661.81/30,981.51
  6. Step 6: Final answer
    x = 23,231.30

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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.