Home / 20,746.12-31,101.20-9,647.10

Finding the Fourth Proportional to 20,746.12, 31,101.20 and 9,647.10

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Solution

The fourth proportional to 20,746.12, 31,101.20 and 9,647.10 is: 14,462.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.12 : 31,101.20 = 9,647.10 : x
  2. Step 2: Convert to fraction form
    20,746.12/31,101.20 = 9,647.10/x
  3. Step 3: Cross multiply
    20,746.12x = 31,101.20 × 9,647.10
  4. Step 4: Simplify right side
    20,746.12x = 300,036,386.52
  5. Step 5: Solve for x
    x = 300,036,386.52/20,746.12
  6. Step 6: Final answer
    x = 14,462.29

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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.