Home / 21,820.05-32,719.70-9,970.31

Finding the Fourth Proportional to 21,820.05, 32,719.70 and 9,970.31

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Solution

The fourth proportional to 21,820.05, 32,719.70 and 9,970.31 is: 14,950.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.05 : 32,719.70 = 9,970.31 : x
  2. Step 2: Convert to fraction form
    21,820.05/32,719.70 = 9,970.31/x
  3. Step 3: Cross multiply
    21,820.05x = 32,719.70 × 9,970.31
  4. Step 4: Simplify right side
    21,820.05x = 326,225,658.83
  5. Step 5: Solve for x
    x = 326,225,658.83/21,820.05
  6. Step 6: Final answer
    x = 14,950.73

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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.