Home / 13,438.58-18,483.57-10,780.16

Finding the Fourth Proportional to 13,438.58, 18,483.57 and 10,780.16

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Solution

The fourth proportional to 13,438.58, 18,483.57 and 10,780.16 is: 14,827.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.58 : 18,483.57 = 10,780.16 : x
  2. Step 2: Convert to fraction form
    13,438.58/18,483.57 = 10,780.16/x
  3. Step 3: Cross multiply
    13,438.58x = 18,483.57 × 10,780.16
  4. Step 4: Simplify right side
    13,438.58x = 199,255,749.55
  5. Step 5: Solve for x
    x = 199,255,749.55/13,438.58
  6. Step 6: Final answer
    x = 14,827.15

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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.