Home / 30,519.42-42,117.48-21,582.96

Finding the Fourth Proportional to 30,519.42, 42,117.48 and 21,582.96

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Solution

The fourth proportional to 30,519.42, 42,117.48 and 21,582.96 is: 29,784.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519.42 : 42,117.48 = 21,582.96 : x
  2. Step 2: Convert to fraction form
    30,519.42/42,117.48 = 21,582.96/x
  3. Step 3: Cross multiply
    30,519.42x = 42,117.48 × 21,582.96
  4. Step 4: Simplify right side
    30,519.42x = 909,019,886.14
  5. Step 5: Solve for x
    x = 909,019,886.14/30,519.42
  6. Step 6: Final answer
    x = 29,784.97

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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.