Home / 30,686.13-42,342.48-17,256.87

Finding the Fourth Proportional to 30,686.13, 42,342.48 and 17,256.87

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Solution

The fourth proportional to 30,686.13, 42,342.48 and 17,256.87 is: 23,812.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,686.13 : 42,342.48 = 17,256.87 : x
  2. Step 2: Convert to fraction form
    30,686.13/42,342.48 = 17,256.87/x
  3. Step 3: Cross multiply
    30,686.13x = 42,342.48 × 17,256.87
  4. Step 4: Simplify right side
    30,686.13x = 730,698,672.84
  5. Step 5: Solve for x
    x = 730,698,672.84/30,686.13
  6. Step 6: Final answer
    x = 23,812.02

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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.