Home / 30,925.32-42,632.02-20,296.36

Finding the Fourth Proportional to 30,925.32, 42,632.02 and 20,296.36

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Solution

The fourth proportional to 30,925.32, 42,632.02 and 20,296.36 is: 27,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,925.32 : 42,632.02 = 20,296.36 : x
  2. Step 2: Convert to fraction form
    30,925.32/42,632.02 = 20,296.36/x
  3. Step 3: Cross multiply
    30,925.32x = 42,632.02 × 20,296.36
  4. Step 4: Simplify right side
    30,925.32x = 865,274,825.45
  5. Step 5: Solve for x
    x = 865,274,825.45/30,925.32
  6. Step 6: Final answer
    x = 27,979.49

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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.