Home / 21,588.73-29,792.87-13,088.77

Finding the Fourth Proportional to 21,588.73, 29,792.87 and 13,088.77

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Solution

The fourth proportional to 21,588.73, 29,792.87 and 13,088.77 is: 18,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.73 : 29,792.87 = 13,088.77 : x
  2. Step 2: Convert to fraction form
    21,588.73/29,792.87 = 13,088.77/x
  3. Step 3: Cross multiply
    21,588.73x = 29,792.87 × 13,088.77
  4. Step 4: Simplify right side
    21,588.73x = 389,952,023.07
  5. Step 5: Solve for x
    x = 389,952,023.07/21,588.73
  6. Step 6: Final answer
    x = 18,062.76

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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.