Home / 30,948.75-42,709.78-16,801.59

Finding the Fourth Proportional to 30,948.75, 42,709.78 and 16,801.59

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Solution

The fourth proportional to 30,948.75, 42,709.78 and 16,801.59 is: 23,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,948.75 : 42,709.78 = 16,801.59 : x
  2. Step 2: Convert to fraction form
    30,948.75/42,709.78 = 16,801.59/x
  3. Step 3: Cross multiply
    30,948.75x = 42,709.78 × 16,801.59
  4. Step 4: Simplify right side
    30,948.75x = 717,592,393.71
  5. Step 5: Solve for x
    x = 717,592,393.71/30,948.75
  6. Step 6: Final answer
    x = 23,186.47

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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.