Home / 30,442.99-42,012.93-18,504.40

Finding the Fourth Proportional to 30,442.99, 42,012.93 and 18,504.40

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Solution

The fourth proportional to 30,442.99, 42,012.93 and 18,504.40 is: 25,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,442.99 : 42,012.93 = 18,504.40 : x
  2. Step 2: Convert to fraction form
    30,442.99/42,012.93 = 18,504.40/x
  3. Step 3: Cross multiply
    30,442.99x = 42,012.93 × 18,504.40
  4. Step 4: Simplify right side
    30,442.99x = 777,424,061.89
  5. Step 5: Solve for x
    x = 777,424,061.89/30,442.99
  6. Step 6: Final answer
    x = 25,537.05

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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.