Home / 30,643.76-42,292.34-17,215.01

Finding the Fourth Proportional to 30,643.76, 42,292.34 and 17,215.01

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Solution

The fourth proportional to 30,643.76, 42,292.34 and 17,215.01 is: 23,758.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643.76 : 42,292.34 = 17,215.01 : x
  2. Step 2: Convert to fraction form
    30,643.76/42,292.34 = 17,215.01/x
  3. Step 3: Cross multiply
    30,643.76x = 42,292.34 × 17,215.01
  4. Step 4: Simplify right side
    30,643.76x = 728,063,056.02
  5. Step 5: Solve for x
    x = 728,063,056.02/30,643.76
  6. Step 6: Final answer
    x = 23,758.93

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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.