Home / 21,136.84-31,702.86-5,555.68

Finding the Fourth Proportional to 21,136.84, 31,702.86 and 5,555.68

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Solution

The fourth proportional to 21,136.84, 31,702.86 and 5,555.68 is: 8,332.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.84 : 31,702.86 = 5,555.68 : x
  2. Step 2: Convert to fraction form
    21,136.84/31,702.86 = 5,555.68/x
  3. Step 3: Cross multiply
    21,136.84x = 31,702.86 × 5,555.68
  4. Step 4: Simplify right side
    21,136.84x = 176,130,945.24
  5. Step 5: Solve for x
    x = 176,130,945.24/21,136.84
  6. Step 6: Final answer
    x = 8,332.89

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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.