Home / 13,340.84-18,389.09-10,503.72

Finding the Fourth Proportional to 13,340.84, 18,389.09 and 10,503.72

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Solution

The fourth proportional to 13,340.84, 18,389.09 and 10,503.72 is: 14,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.84 : 18,389.09 = 10,503.72 : x
  2. Step 2: Convert to fraction form
    13,340.84/18,389.09 = 10,503.72/x
  3. Step 3: Cross multiply
    13,340.84x = 18,389.09 × 10,503.72
  4. Step 4: Simplify right side
    13,340.84x = 193,153,852.41
  5. Step 5: Solve for x
    x = 193,153,852.41/13,340.84
  6. Step 6: Final answer
    x = 14,478.39

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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.