Home / 21,529.52-29,715.74-13,582.61

Finding the Fourth Proportional to 21,529.52, 29,715.74 and 13,582.61

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Solution

The fourth proportional to 21,529.52, 29,715.74 and 13,582.61 is: 18,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.52 : 29,715.74 = 13,582.61 : x
  2. Step 2: Convert to fraction form
    21,529.52/29,715.74 = 13,582.61/x
  3. Step 3: Cross multiply
    21,529.52x = 29,715.74 × 13,582.61
  4. Step 4: Simplify right side
    21,529.52x = 403,617,364.59
  5. Step 5: Solve for x
    x = 403,617,364.59/21,529.52
  6. Step 6: Final answer
    x = 18,747.16

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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.