Home / 12,681.20-19,005.60-9,214.40

Finding the Fourth Proportional to 12,681.20, 19,005.60 and 9,214.40

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Solution

The fourth proportional to 12,681.20, 19,005.60 and 9,214.40 is: 13,809.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.20 : 19,005.60 = 9,214.40 : x
  2. Step 2: Convert to fraction form
    12,681.20/19,005.60 = 9,214.40/x
  3. Step 3: Cross multiply
    12,681.20x = 19,005.60 × 9,214.40
  4. Step 4: Simplify right side
    12,681.20x = 175,125,200.64
  5. Step 5: Solve for x
    x = 175,125,200.64/12,681.20
  6. Step 6: Final answer
    x = 13,809.83

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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.