Home / 20,457.07-30,671.40-10,442.36

Finding the Fourth Proportional to 20,457.07, 30,671.40 and 10,442.36

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Solution

The fourth proportional to 20,457.07, 30,671.40 and 10,442.36 is: 15,656.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.07 : 30,671.40 = 10,442.36 : x
  2. Step 2: Convert to fraction form
    20,457.07/30,671.40 = 10,442.36/x
  3. Step 3: Cross multiply
    20,457.07x = 30,671.40 × 10,442.36
  4. Step 4: Simplify right side
    20,457.07x = 320,281,800.50
  5. Step 5: Solve for x
    x = 320,281,800.50/20,457.07
  6. Step 6: Final answer
    x = 15,656.29

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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.