Home / 15,985.84-23,981.23-5,453.40

Finding the Fourth Proportional to 15,985.84, 23,981.23 and 5,453.40

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Solution

The fourth proportional to 15,985.84, 23,981.23 and 5,453.40 is: 8,180.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,985.84 : 23,981.23 = 5,453.40 : x
  2. Step 2: Convert to fraction form
    15,985.84/23,981.23 = 5,453.40/x
  3. Step 3: Cross multiply
    15,985.84x = 23,981.23 × 5,453.40
  4. Step 4: Simplify right side
    15,985.84x = 130,779,156.57
  5. Step 5: Solve for x
    x = 130,779,156.57/15,985.84
  6. Step 6: Final answer
    x = 8,180.94

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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.