Home / 38,510.84-53,143.05-21,511.69

Finding the Fourth Proportional to 38,510.84, 53,143.05 and 21,511.69

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Solution

The fourth proportional to 38,510.84, 53,143.05 and 21,511.69 is: 29,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,510.84 : 53,143.05 = 21,511.69 : x
  2. Step 2: Convert to fraction form
    38,510.84/53,143.05 = 21,511.69/x
  3. Step 3: Cross multiply
    38,510.84x = 53,143.05 × 21,511.69
  4. Step 4: Simplify right side
    38,510.84x = 1,143,197,064.00
  5. Step 5: Solve for x
    x = 1,143,197,064.00/38,510.84
  6. Step 6: Final answer
    x = 29,685.07

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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.