Home / 30,948.69-42,709.24-16,801.55

Finding the Fourth Proportional to 30,948.69, 42,709.24 and 16,801.55

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Solution

The fourth proportional to 30,948.69, 42,709.24 and 16,801.55 is: 23,186.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,948.69 : 42,709.24 = 16,801.55 : x
  2. Step 2: Convert to fraction form
    30,948.69/42,709.24 = 16,801.55/x
  3. Step 3: Cross multiply
    30,948.69x = 42,709.24 × 16,801.55
  4. Step 4: Simplify right side
    30,948.69x = 717,581,431.32
  5. Step 5: Solve for x
    x = 717,581,431.32/30,948.69
  6. Step 6: Final answer
    x = 23,186.16

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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.