Home / 30,595.27-42,142.80-21,627.35

Finding the Fourth Proportional to 30,595.27, 42,142.80 and 21,627.35

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Solution

The fourth proportional to 30,595.27, 42,142.80 and 21,627.35 is: 29,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,595.27 : 42,142.80 = 21,627.35 : x
  2. Step 2: Convert to fraction form
    30,595.27/42,142.80 = 21,627.35/x
  3. Step 3: Cross multiply
    30,595.27x = 42,142.80 × 21,627.35
  4. Step 4: Simplify right side
    30,595.27x = 911,437,085.58
  5. Step 5: Solve for x
    x = 911,437,085.58/30,595.27
  6. Step 6: Final answer
    x = 29,790.13

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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.