Home / 13,374.84-18,456.60-7,406.40

Finding the Fourth Proportional to 13,374.84, 18,456.60 and 7,406.40

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Solution

The fourth proportional to 13,374.84, 18,456.60 and 7,406.40 is: 10,220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.84 : 18,456.60 = 7,406.40 : x
  2. Step 2: Convert to fraction form
    13,374.84/18,456.60 = 7,406.40/x
  3. Step 3: Cross multiply
    13,374.84x = 18,456.60 × 7,406.40
  4. Step 4: Simplify right side
    13,374.84x = 136,696,962.24
  5. Step 5: Solve for x
    x = 136,696,962.24/13,374.84
  6. Step 6: Final answer
    x = 10,220.46

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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.