Home / 30,809.07-42,516.93-17,380.28

Finding the Fourth Proportional to 30,809.07, 42,516.93 and 17,380.28

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Solution

The fourth proportional to 30,809.07, 42,516.93 and 17,380.28 is: 23,985.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.07 : 42,516.93 = 17,380.28 : x
  2. Step 2: Convert to fraction form
    30,809.07/42,516.93 = 17,380.28/x
  3. Step 3: Cross multiply
    30,809.07x = 42,516.93 × 17,380.28
  4. Step 4: Simplify right side
    30,809.07x = 738,956,342.74
  5. Step 5: Solve for x
    x = 738,956,342.74/30,809.07
  6. Step 6: Final answer
    x = 23,985.02

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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.