Home / 31,055.07-42,856.09-16,908.01

Finding the Fourth Proportional to 31,055.07, 42,856.09 and 16,908.01

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Solution

The fourth proportional to 31,055.07, 42,856.09 and 16,908.01 is: 23,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,055.07 : 42,856.09 = 16,908.01 : x
  2. Step 2: Convert to fraction form
    31,055.07/42,856.09 = 16,908.01/x
  3. Step 3: Cross multiply
    31,055.07x = 42,856.09 × 16,908.01
  4. Step 4: Simplify right side
    31,055.07x = 724,611,198.28
  5. Step 5: Solve for x
    x = 724,611,198.28/31,055.07
  6. Step 6: Final answer
    x = 23,333.10

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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.