Home / 15,780.06-21,768.68-10,325.93

Finding the Fourth Proportional to 15,780.06, 21,768.68 and 10,325.93

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Solution

The fourth proportional to 15,780.06, 21,768.68 and 10,325.93 is: 14,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.06 : 21,768.68 = 10,325.93 : x
  2. Step 2: Convert to fraction form
    15,780.06/21,768.68 = 10,325.93/x
  3. Step 3: Cross multiply
    15,780.06x = 21,768.68 × 10,325.93
  4. Step 4: Simplify right side
    15,780.06x = 224,781,705.40
  5. Step 5: Solve for x
    x = 224,781,705.40/15,780.06
  6. Step 6: Final answer
    x = 14,244.67

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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.