Home / 13,655.56-18,827.76-8,931.64

Finding the Fourth Proportional to 13,655.56, 18,827.76 and 8,931.64

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Solution

The fourth proportional to 13,655.56, 18,827.76 and 8,931.64 is: 12,314.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.56 : 18,827.76 = 8,931.64 : x
  2. Step 2: Convert to fraction form
    13,655.56/18,827.76 = 8,931.64/x
  3. Step 3: Cross multiply
    13,655.56x = 18,827.76 × 8,931.64
  4. Step 4: Simplify right side
    13,655.56x = 168,162,774.33
  5. Step 5: Solve for x
    x = 168,162,774.33/13,655.56
  6. Step 6: Final answer
    x = 12,314.60

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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.