Home / 31,420.52-43,362.08-17,988.69

Finding the Fourth Proportional to 31,420.52, 43,362.08 and 17,988.69

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Solution

The fourth proportional to 31,420.52, 43,362.08 and 17,988.69 is: 24,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,420.52 : 43,362.08 = 17,988.69 : x
  2. Step 2: Convert to fraction form
    31,420.52/43,362.08 = 17,988.69/x
  3. Step 3: Cross multiply
    31,420.52x = 43,362.08 × 17,988.69
  4. Step 4: Simplify right side
    31,420.52x = 780,027,014.88
  5. Step 5: Solve for x
    x = 780,027,014.88/31,420.52
  6. Step 6: Final answer
    x = 24,825.40

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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.