Home / 12,931.90-17,848.10-12,087.68

Finding the Fourth Proportional to 12,931.90, 17,848.10 and 12,087.68

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Solution

The fourth proportional to 12,931.90, 17,848.10 and 12,087.68 is: 16,682.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.90 : 17,848.10 = 12,087.68 : x
  2. Step 2: Convert to fraction form
    12,931.90/17,848.10 = 12,087.68/x
  3. Step 3: Cross multiply
    12,931.90x = 17,848.10 × 12,087.68
  4. Step 4: Simplify right side
    12,931.90x = 215,742,121.41
  5. Step 5: Solve for x
    x = 215,742,121.41/12,931.90
  6. Step 6: Final answer
    x = 16,682.94

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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.