Home / 30,726.40-46,089.63-8,539.78

Finding the Fourth Proportional to 30,726.40, 46,089.63 and 8,539.78

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Solution

The fourth proportional to 30,726.40, 46,089.63 and 8,539.78 is: 12,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,726.40 : 46,089.63 = 8,539.78 : x
  2. Step 2: Convert to fraction form
    30,726.40/46,089.63 = 8,539.78/x
  3. Step 3: Cross multiply
    30,726.40x = 46,089.63 × 8,539.78
  4. Step 4: Simplify right side
    30,726.40x = 393,595,300.48
  5. Step 5: Solve for x
    x = 393,595,300.48/30,726.40
  6. Step 6: Final answer
    x = 12,809.68

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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.