Home / 21,047.89-29,045.18-11,487.53

Finding the Fourth Proportional to 21,047.89, 29,045.18 and 11,487.53

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Solution

The fourth proportional to 21,047.89, 29,045.18 and 11,487.53 is: 15,852.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.89 : 29,045.18 = 11,487.53 : x
  2. Step 2: Convert to fraction form
    21,047.89/29,045.18 = 11,487.53/x
  3. Step 3: Cross multiply
    21,047.89x = 29,045.18 × 11,487.53
  4. Step 4: Simplify right side
    21,047.89x = 333,657,319.17
  5. Step 5: Solve for x
    x = 333,657,319.17/21,047.89
  6. Step 6: Final answer
    x = 15,852.30

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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.