Home / 30,700.40-42,366.50-17,271.67

Finding the Fourth Proportional to 30,700.40, 42,366.50 and 17,271.67

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Solution

The fourth proportional to 30,700.40, 42,366.50 and 17,271.67 is: 23,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,700.40 : 42,366.50 = 17,271.67 : x
  2. Step 2: Convert to fraction form
    30,700.40/42,366.50 = 17,271.67/x
  3. Step 3: Cross multiply
    30,700.40x = 42,366.50 × 17,271.67
  4. Step 4: Simplify right side
    30,700.40x = 731,740,207.06
  5. Step 5: Solve for x
    x = 731,740,207.06/30,700.40
  6. Step 6: Final answer
    x = 23,834.88

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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.