Home / 21,047.61-29,045.77-11,487.59

Finding the Fourth Proportional to 21,047.61, 29,045.77 and 11,487.59

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Solution

The fourth proportional to 21,047.61, 29,045.77 and 11,487.59 is: 15,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.61 : 29,045.77 = 11,487.59 : x
  2. Step 2: Convert to fraction form
    21,047.61/29,045.77 = 11,487.59/x
  3. Step 3: Cross multiply
    21,047.61x = 29,045.77 × 11,487.59
  4. Step 4: Simplify right side
    21,047.61x = 333,665,737.81
  5. Step 5: Solve for x
    x = 333,665,737.81/21,047.61
  6. Step 6: Final answer
    x = 15,852.90

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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.