Home / 30,881.17-42,615.07-18,134.16

Finding the Fourth Proportional to 30,881.17, 42,615.07 and 18,134.16

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Solution

The fourth proportional to 30,881.17, 42,615.07 and 18,134.16 is: 25,024.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,881.17 : 42,615.07 = 18,134.16 : x
  2. Step 2: Convert to fraction form
    30,881.17/42,615.07 = 18,134.16/x
  3. Step 3: Cross multiply
    30,881.17x = 42,615.07 × 18,134.16
  4. Step 4: Simplify right side
    30,881.17x = 772,788,497.79
  5. Step 5: Solve for x
    x = 772,788,497.79/30,881.17
  6. Step 6: Final answer
    x = 25,024.59

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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.