Home / 21,570.84-29,765.75-15,908.67

Finding the Fourth Proportional to 21,570.84, 29,765.75 and 15,908.67

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Solution

The fourth proportional to 21,570.84, 29,765.75 and 15,908.67 is: 21,952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.84 : 29,765.75 = 15,908.67 : x
  2. Step 2: Convert to fraction form
    21,570.84/29,765.75 = 15,908.67/x
  3. Step 3: Cross multiply
    21,570.84x = 29,765.75 × 15,908.67
  4. Step 4: Simplify right side
    21,570.84x = 473,533,414.51
  5. Step 5: Solve for x
    x = 473,533,414.51/21,570.84
  6. Step 6: Final answer
    x = 21,952.48

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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.