Home / 10,290.16-15,428.76-6,776.38

Finding the Fourth Proportional to 10,290.16, 15,428.76 and 6,776.38

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Solution

The fourth proportional to 10,290.16, 15,428.76 and 6,776.38 is: 10,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,290.16 : 15,428.76 = 6,776.38 : x
  2. Step 2: Convert to fraction form
    10,290.16/15,428.76 = 6,776.38/x
  3. Step 3: Cross multiply
    10,290.16x = 15,428.76 × 6,776.38
  4. Step 4: Simplify right side
    10,290.16x = 104,551,140.69
  5. Step 5: Solve for x
    x = 104,551,140.69/10,290.16
  6. Step 6: Final answer
    x = 10,160.30

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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.