Home / 30,557.53-42,169.03-17,128.77

Finding the Fourth Proportional to 30,557.53, 42,169.03 and 17,128.77

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Solution

The fourth proportional to 30,557.53, 42,169.03 and 17,128.77 is: 23,637.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.53 : 42,169.03 = 17,128.77 : x
  2. Step 2: Convert to fraction form
    30,557.53/42,169.03 = 17,128.77/x
  3. Step 3: Cross multiply
    30,557.53x = 42,169.03 × 17,128.77
  4. Step 4: Simplify right side
    30,557.53x = 722,303,615.99
  5. Step 5: Solve for x
    x = 722,303,615.99/30,557.53
  6. Step 6: Final answer
    x = 23,637.50

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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.