Home / 22,307.90-30,787.48-13,355.40

Finding the Fourth Proportional to 22,307.90, 30,787.48 and 13,355.40

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Solution

The fourth proportional to 22,307.90, 30,787.48 and 13,355.40 is: 18,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,307.90 : 30,787.48 = 13,355.40 : x
  2. Step 2: Convert to fraction form
    22,307.90/30,787.48 = 13,355.40/x
  3. Step 3: Cross multiply
    22,307.90x = 30,787.48 × 13,355.40
  4. Step 4: Simplify right side
    22,307.90x = 411,179,077.00
  5. Step 5: Solve for x
    x = 411,179,077.00/22,307.90
  6. Step 6: Final answer
    x = 18,431.99

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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.