Home / 20,210.37-30,275.37-15,807.21

Finding the Fourth Proportional to 20,210.37, 30,275.37 and 15,807.21

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Solution

The fourth proportional to 20,210.37, 30,275.37 and 15,807.21 is: 23,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.37 : 30,275.37 = 15,807.21 : x
  2. Step 2: Convert to fraction form
    20,210.37/30,275.37 = 15,807.21/x
  3. Step 3: Cross multiply
    20,210.37x = 30,275.37 × 15,807.21
  4. Step 4: Simplify right side
    20,210.37x = 478,569,131.42
  5. Step 5: Solve for x
    x = 478,569,131.42/20,210.37
  6. Step 6: Final answer
    x = 23,679.38

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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.