Home / 10,064.89-13,890-5,588.71

Finding the Fourth Proportional to 10,064.89, 13,890 and 5,588.71

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Solution

The fourth proportional to 10,064.89, 13,890 and 5,588.71 is: 7,712.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,064.89 : 13,890 = 5,588.71 : x
  2. Step 2: Convert to fraction form
    10,064.89/13,890 = 5,588.71/x
  3. Step 3: Cross multiply
    10,064.89x = 13,890 × 5,588.71
  4. Step 4: Simplify right side
    10,064.89x = 77,627,181.90
  5. Step 5: Solve for x
    x = 77,627,181.90/10,064.89
  6. Step 6: Final answer
    x = 7,712.67

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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.