Home / 30,596.81-42,189.86-21,148.97

Finding the Fourth Proportional to 30,596.81, 42,189.86 and 21,148.97

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Solution

The fourth proportional to 30,596.81, 42,189.86 and 21,148.97 is: 29,162.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,596.81 : 42,189.86 = 21,148.97 : x
  2. Step 2: Convert to fraction form
    30,596.81/42,189.86 = 21,148.97/x
  3. Step 3: Cross multiply
    30,596.81x = 42,189.86 × 21,148.97
  4. Step 4: Simplify right side
    30,596.81x = 892,271,925.37
  5. Step 5: Solve for x
    x = 892,271,925.37/30,596.81
  6. Step 6: Final answer
    x = 29,162.26

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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.