Home / 12,501.60-18,752.40-6,280.80

Finding the Fourth Proportional to 12,501.60, 18,752.40 and 6,280.80

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Solution

The fourth proportional to 12,501.60, 18,752.40 and 6,280.80 is: 9,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,501.60 : 18,752.40 = 6,280.80 : x
  2. Step 2: Convert to fraction form
    12,501.60/18,752.40 = 6,280.80/x
  3. Step 3: Cross multiply
    12,501.60x = 18,752.40 × 6,280.80
  4. Step 4: Simplify right side
    12,501.60x = 117,780,073.92
  5. Step 5: Solve for x
    x = 117,780,073.92/12,501.60
  6. Step 6: Final answer
    x = 9,421.20

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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.