Home / 27,649.99-38,155.34-15,711.67

Finding the Fourth Proportional to 27,649.99, 38,155.34 and 15,711.67

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Solution

The fourth proportional to 27,649.99, 38,155.34 and 15,711.67 is: 21,681.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,649.99 : 38,155.34 = 15,711.67 : x
  2. Step 2: Convert to fraction form
    27,649.99/38,155.34 = 15,711.67/x
  3. Step 3: Cross multiply
    27,649.99x = 38,155.34 × 15,711.67
  4. Step 4: Simplify right side
    27,649.99x = 599,483,995.79
  5. Step 5: Solve for x
    x = 599,483,995.79/27,649.99
  6. Step 6: Final answer
    x = 21,681.17

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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.