Home / 15,323.91-21,141.73-9,953.06

Finding the Fourth Proportional to 15,323.91, 21,141.73 and 9,953.06

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Solution

The fourth proportional to 15,323.91, 21,141.73 and 9,953.06 is: 13,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.91 : 21,141.73 = 9,953.06 : x
  2. Step 2: Convert to fraction form
    15,323.91/21,141.73 = 9,953.06/x
  3. Step 3: Cross multiply
    15,323.91x = 21,141.73 × 9,953.06
  4. Step 4: Simplify right side
    15,323.91x = 210,424,893.74
  5. Step 5: Solve for x
    x = 210,424,893.74/15,323.91
  6. Step 6: Final answer
    x = 13,731.80

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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.