Home / 31,715.61-43,756.32-18,959.94

Finding the Fourth Proportional to 31,715.61, 43,756.32 and 18,959.94

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Solution

The fourth proportional to 31,715.61, 43,756.32 and 18,959.94 is: 26,158.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,715.61 : 43,756.32 = 18,959.94 : x
  2. Step 2: Convert to fraction form
    31,715.61/43,756.32 = 18,959.94/x
  3. Step 3: Cross multiply
    31,715.61x = 43,756.32 × 18,959.94
  4. Step 4: Simplify right side
    31,715.61x = 829,617,201.82
  5. Step 5: Solve for x
    x = 829,617,201.82/31,715.61
  6. Step 6: Final answer
    x = 26,158.01

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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.