Home / 13,387.86-18,474.93-7,798.50

Finding the Fourth Proportional to 13,387.86, 18,474.93 and 7,798.50

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Solution

The fourth proportional to 13,387.86, 18,474.93 and 7,798.50 is: 10,761.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.86 : 18,474.93 = 7,798.50 : x
  2. Step 2: Convert to fraction form
    13,387.86/18,474.93 = 7,798.50/x
  3. Step 3: Cross multiply
    13,387.86x = 18,474.93 × 7,798.50
  4. Step 4: Simplify right side
    13,387.86x = 144,076,741.61
  5. Step 5: Solve for x
    x = 144,076,741.61/13,387.86
  6. Step 6: Final answer
    x = 10,761.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.