Home / 10,430.86-15,646.83-2,639.74

Finding the Fourth Proportional to 10,430.86, 15,646.83 and 2,639.74

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Solution

The fourth proportional to 10,430.86, 15,646.83 and 2,639.74 is: 3,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.86 : 15,646.83 = 2,639.74 : x
  2. Step 2: Convert to fraction form
    10,430.86/15,646.83 = 2,639.74/x
  3. Step 3: Cross multiply
    10,430.86x = 15,646.83 × 2,639.74
  4. Step 4: Simplify right side
    10,430.86x = 41,303,563.02
  5. Step 5: Solve for x
    x = 41,303,563.02/10,430.86
  6. Step 6: Final answer
    x = 3,959.75

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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.