Home / 21,136.95-31,703.81-5,554.17

Finding the Fourth Proportional to 21,136.95, 31,703.81 and 5,554.17

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Solution

The fourth proportional to 21,136.95, 31,703.81 and 5,554.17 is: 8,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.95 : 31,703.81 = 5,554.17 : x
  2. Step 2: Convert to fraction form
    21,136.95/31,703.81 = 5,554.17/x
  3. Step 3: Cross multiply
    21,136.95x = 31,703.81 × 5,554.17
  4. Step 4: Simplify right side
    21,136.95x = 176,088,322.62
  5. Step 5: Solve for x
    x = 176,088,322.62/21,136.95
  6. Step 6: Final answer
    x = 8,330.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.