Home / 30,888.08-42,630.08-19,558.60

Finding the Fourth Proportional to 30,888.08, 42,630.08 and 19,558.60

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Solution

The fourth proportional to 30,888.08, 42,630.08 and 19,558.60 is: 26,993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,888.08 : 42,630.08 = 19,558.60 : x
  2. Step 2: Convert to fraction form
    30,888.08/42,630.08 = 19,558.60/x
  3. Step 3: Cross multiply
    30,888.08x = 42,630.08 × 19,558.60
  4. Step 4: Simplify right side
    30,888.08x = 833,784,682.69
  5. Step 5: Solve for x
    x = 833,784,682.69/30,888.08
  6. Step 6: Final answer
    x = 26,993.74

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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.