Home / 12,430.40-18,636.28-7,498.87

Finding the Fourth Proportional to 12,430.40, 18,636.28 and 7,498.87

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Solution

The fourth proportional to 12,430.40, 18,636.28 and 7,498.87 is: 11,242.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.40 : 18,636.28 = 7,498.87 : x
  2. Step 2: Convert to fraction form
    12,430.40/18,636.28 = 7,498.87/x
  3. Step 3: Cross multiply
    12,430.40x = 18,636.28 × 7,498.87
  4. Step 4: Simplify right side
    12,430.40x = 139,750,975.67
  5. Step 5: Solve for x
    x = 139,750,975.67/12,430.40
  6. Step 6: Final answer
    x = 11,242.68

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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.