Home / 31,259.61-43,133.63-18,988.64

Finding the Fourth Proportional to 31,259.61, 43,133.63 and 18,988.64

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Solution

The fourth proportional to 31,259.61, 43,133.63 and 18,988.64 is: 26,201.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,259.61 : 43,133.63 = 18,988.64 : x
  2. Step 2: Convert to fraction form
    31,259.61/43,133.63 = 18,988.64/x
  3. Step 3: Cross multiply
    31,259.61x = 43,133.63 × 18,988.64
  4. Step 4: Simplify right side
    31,259.61x = 819,048,984.85
  5. Step 5: Solve for x
    x = 819,048,984.85/31,259.61
  6. Step 6: Final answer
    x = 26,201.51

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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.