Home / 20,209.32-30,312.90-7,061.40

Finding the Fourth Proportional to 20,209.32, 30,312.90 and 7,061.40

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Solution

The fourth proportional to 20,209.32, 30,312.90 and 7,061.40 is: 10,591.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.32 : 30,312.90 = 7,061.40 : x
  2. Step 2: Convert to fraction form
    20,209.32/30,312.90 = 7,061.40/x
  3. Step 3: Cross multiply
    20,209.32x = 30,312.90 × 7,061.40
  4. Step 4: Simplify right side
    20,209.32x = 214,051,512.06
  5. Step 5: Solve for x
    x = 214,051,512.06/20,209.32
  6. Step 6: Final answer
    x = 10,591.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.