Home / 30,528.95-42,129.71-17,100.33

Finding the Fourth Proportional to 30,528.95, 42,129.71 and 17,100.33

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Solution

The fourth proportional to 30,528.95, 42,129.71 and 17,100.33 is: 23,598.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,528.95 : 42,129.71 = 17,100.33 : x
  2. Step 2: Convert to fraction form
    30,528.95/42,129.71 = 17,100.33/x
  3. Step 3: Cross multiply
    30,528.95x = 42,129.71 × 17,100.33
  4. Step 4: Simplify right side
    30,528.95x = 720,431,963.63
  5. Step 5: Solve for x
    x = 720,431,963.63/30,528.95
  6. Step 6: Final answer
    x = 23,598.32

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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.