Home / 13,854.12-19,117.14-7,885.20

Finding the Fourth Proportional to 13,854.12, 19,117.14 and 7,885.20

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Solution

The fourth proportional to 13,854.12, 19,117.14 and 7,885.20 is: 10,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,854.12 : 19,117.14 = 7,885.20 : x
  2. Step 2: Convert to fraction form
    13,854.12/19,117.14 = 7,885.20/x
  3. Step 3: Cross multiply
    13,854.12x = 19,117.14 × 7,885.20
  4. Step 4: Simplify right side
    13,854.12x = 150,742,472.33
  5. Step 5: Solve for x
    x = 150,742,472.33/13,854.12
  6. Step 6: Final answer
    x = 10,880.70

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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.