Home / 30,688.37-42,335.64-19,932.47

Finding the Fourth Proportional to 30,688.37, 42,335.64 and 19,932.47

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Solution

The fourth proportional to 30,688.37, 42,335.64 and 19,932.47 is: 27,497.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,688.37 : 42,335.64 = 19,932.47 : x
  2. Step 2: Convert to fraction form
    30,688.37/42,335.64 = 19,932.47/x
  3. Step 3: Cross multiply
    30,688.37x = 42,335.64 × 19,932.47
  4. Step 4: Simplify right side
    30,688.37x = 843,853,980.07
  5. Step 5: Solve for x
    x = 843,853,980.07/30,688.37
  6. Step 6: Final answer
    x = 27,497.52

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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.