Home / 12,459.90-18,711.45-12,071.10

Finding the Fourth Proportional to 12,459.90, 18,711.45 and 12,071.10

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Solution

The fourth proportional to 12,459.90, 18,711.45 and 12,071.10 is: 18,127.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.90 : 18,711.45 = 12,071.10 : x
  2. Step 2: Convert to fraction form
    12,459.90/18,711.45 = 12,071.10/x
  3. Step 3: Cross multiply
    12,459.90x = 18,711.45 × 12,071.10
  4. Step 4: Simplify right side
    12,459.90x = 225,867,784.10
  5. Step 5: Solve for x
    x = 225,867,784.10/12,459.90
  6. Step 6: Final answer
    x = 18,127.58

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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.