Home / 21,047.55-29,045.78-11,487.51

Finding the Fourth Proportional to 21,047.55, 29,045.78 and 11,487.51

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Solution

The fourth proportional to 21,047.55, 29,045.78 and 11,487.51 is: 15,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.55 : 29,045.78 = 11,487.51 : x
  2. Step 2: Convert to fraction form
    21,047.55/29,045.78 = 11,487.51/x
  3. Step 3: Cross multiply
    21,047.55x = 29,045.78 × 11,487.51
  4. Step 4: Simplify right side
    21,047.55x = 333,663,630.77
  5. Step 5: Solve for x
    x = 333,663,630.77/21,047.55
  6. Step 6: Final answer
    x = 15,852.85

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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.