Home / 21,037.53-31,547.05-7,880.67

Finding the Fourth Proportional to 21,037.53, 31,547.05 and 7,880.67

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Solution

The fourth proportional to 21,037.53, 31,547.05 and 7,880.67 is: 11,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.53 : 31,547.05 = 7,880.67 : x
  2. Step 2: Convert to fraction form
    21,037.53/31,547.05 = 7,880.67/x
  3. Step 3: Cross multiply
    21,037.53x = 31,547.05 × 7,880.67
  4. Step 4: Simplify right side
    21,037.53x = 248,611,890.52
  5. Step 5: Solve for x
    x = 248,611,890.52/21,037.53
  6. Step 6: Final answer
    x = 11,817.54

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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.