Home / 12,386.89-18,575.57-4,487.08

Finding the Fourth Proportional to 12,386.89, 18,575.57 and 4,487.08

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Solution

The fourth proportional to 12,386.89, 18,575.57 and 4,487.08 is: 6,728.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.89 : 18,575.57 = 4,487.08 : x
  2. Step 2: Convert to fraction form
    12,386.89/18,575.57 = 4,487.08/x
  3. Step 3: Cross multiply
    12,386.89x = 18,575.57 × 4,487.08
  4. Step 4: Simplify right side
    12,386.89x = 83,349,975.76
  5. Step 5: Solve for x
    x = 83,349,975.76/12,386.89
  6. Step 6: Final answer
    x = 6,728.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.