Home / 13,709.61-18,889.18-9,225.58

Finding the Fourth Proportional to 13,709.61, 18,889.18 and 9,225.58

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Solution

The fourth proportional to 13,709.61, 18,889.18 and 9,225.58 is: 12,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.61 : 18,889.18 = 9,225.58 : x
  2. Step 2: Convert to fraction form
    13,709.61/18,889.18 = 9,225.58/x
  3. Step 3: Cross multiply
    13,709.61x = 18,889.18 × 9,225.58
  4. Step 4: Simplify right side
    13,709.61x = 174,263,570.94
  5. Step 5: Solve for x
    x = 174,263,570.94/13,709.61
  6. Step 6: Final answer
    x = 12,711.05

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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.