Home / 19,642.95-27,116.96-15,386.67

Finding the Fourth Proportional to 19,642.95, 27,116.96 and 15,386.67

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Solution

The fourth proportional to 19,642.95, 27,116.96 and 15,386.67 is: 21,241.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,642.95 : 27,116.96 = 15,386.67 : x
  2. Step 2: Convert to fraction form
    19,642.95/27,116.96 = 15,386.67/x
  3. Step 3: Cross multiply
    19,642.95x = 27,116.96 × 15,386.67
  4. Step 4: Simplify right side
    19,642.95x = 417,239,637.99
  5. Step 5: Solve for x
    x = 417,239,637.99/19,642.95
  6. Step 6: Final answer
    x = 21,241.19

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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.