Home / 12,854.40-19,281.60-9,938.40

Finding the Fourth Proportional to 12,854.40, 19,281.60 and 9,938.40

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Solution

The fourth proportional to 12,854.40, 19,281.60 and 9,938.40 is: 14,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854.40 : 19,281.60 = 9,938.40 : x
  2. Step 2: Convert to fraction form
    12,854.40/19,281.60 = 9,938.40/x
  3. Step 3: Cross multiply
    12,854.40x = 19,281.60 × 9,938.40
  4. Step 4: Simplify right side
    12,854.40x = 191,628,253.44
  5. Step 5: Solve for x
    x = 191,628,253.44/12,854.40
  6. Step 6: Final answer
    x = 14,907.60

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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.