Home / 21,056.56-31,575.50-7,899.70

Finding the Fourth Proportional to 21,056.56, 31,575.50 and 7,899.70

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Solution

The fourth proportional to 21,056.56, 31,575.50 and 7,899.70 is: 11,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.56 : 31,575.50 = 7,899.70 : x
  2. Step 2: Convert to fraction form
    21,056.56/31,575.50 = 7,899.70/x
  3. Step 3: Cross multiply
    21,056.56x = 31,575.50 × 7,899.70
  4. Step 4: Simplify right side
    21,056.56x = 249,436,977.35
  5. Step 5: Solve for x
    x = 249,436,977.35/21,056.56
  6. Step 6: Final answer
    x = 11,846.05

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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.