Home / 30,307.63-41,828.35-18,369.45

Finding the Fourth Proportional to 30,307.63, 41,828.35 and 18,369.45

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Solution

The fourth proportional to 30,307.63, 41,828.35 and 18,369.45 is: 25,352.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.63 : 41,828.35 = 18,369.45 : x
  2. Step 2: Convert to fraction form
    30,307.63/41,828.35 = 18,369.45/x
  3. Step 3: Cross multiply
    30,307.63x = 41,828.35 × 18,369.45
  4. Step 4: Simplify right side
    30,307.63x = 768,363,783.91
  5. Step 5: Solve for x
    x = 768,363,783.91/30,307.63
  6. Step 6: Final answer
    x = 25,352.16

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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.