Home / 11,133.80-15,346.80-7,547.66

Finding the Fourth Proportional to 11,133.80, 15,346.80 and 7,547.66

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Solution

The fourth proportional to 11,133.80, 15,346.80 and 7,547.66 is: 10,403.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.80 : 15,346.80 = 7,547.66 : x
  2. Step 2: Convert to fraction form
    11,133.80/15,346.80 = 7,547.66/x
  3. Step 3: Cross multiply
    11,133.80x = 15,346.80 × 7,547.66
  4. Step 4: Simplify right side
    11,133.80x = 115,832,428.49
  5. Step 5: Solve for x
    x = 115,832,428.49/11,133.80
  6. Step 6: Final answer
    x = 10,403.67

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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.