Home / 15,897.47-21,938.87-8,824.35

Finding the Fourth Proportional to 15,897.47, 21,938.87 and 8,824.35

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Solution

The fourth proportional to 15,897.47, 21,938.87 and 8,824.35 is: 12,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.47 : 21,938.87 = 8,824.35 : x
  2. Step 2: Convert to fraction form
    15,897.47/21,938.87 = 8,824.35/x
  3. Step 3: Cross multiply
    15,897.47x = 21,938.87 × 8,824.35
  4. Step 4: Simplify right side
    15,897.47x = 193,596,289.55
  5. Step 5: Solve for x
    x = 193,596,289.55/15,897.47
  6. Step 6: Final answer
    x = 12,177.80

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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.