Home / 30,528.70-42,129.36-17,100.08

Finding the Fourth Proportional to 30,528.70, 42,129.36 and 17,100.08

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Solution

The fourth proportional to 30,528.70, 42,129.36 and 17,100.08 is: 23,597.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,528.70 : 42,129.36 = 17,100.08 : x
  2. Step 2: Convert to fraction form
    30,528.70/42,129.36 = 17,100.08/x
  3. Step 3: Cross multiply
    30,528.70x = 42,129.36 × 17,100.08
  4. Step 4: Simplify right side
    30,528.70x = 720,415,531.67
  5. Step 5: Solve for x
    x = 720,415,531.67/30,528.70
  6. Step 6: Final answer
    x = 23,597.98

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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.