Home / 30,808.08-42,515.76-17,376.70

Finding the Fourth Proportional to 30,808.08, 42,515.76 and 17,376.70

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Solution

The fourth proportional to 30,808.08, 42,515.76 and 17,376.70 is: 23,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.08 : 42,515.76 = 17,376.70 : x
  2. Step 2: Convert to fraction form
    30,808.08/42,515.76 = 17,376.70/x
  3. Step 3: Cross multiply
    30,808.08x = 42,515.76 × 17,376.70
  4. Step 4: Simplify right side
    30,808.08x = 738,783,606.79
  5. Step 5: Solve for x
    x = 738,783,606.79/30,808.08
  6. Step 6: Final answer
    x = 23,980.19

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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.