Home / 12,328.20-18,487.56-9,700.87

Finding the Fourth Proportional to 12,328.20, 18,487.56 and 9,700.87

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Solution

The fourth proportional to 12,328.20, 18,487.56 and 9,700.87 is: 14,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.20 : 18,487.56 = 9,700.87 : x
  2. Step 2: Convert to fraction form
    12,328.20/18,487.56 = 9,700.87/x
  3. Step 3: Cross multiply
    12,328.20x = 18,487.56 × 9,700.87
  4. Step 4: Simplify right side
    12,328.20x = 179,345,416.18
  5. Step 5: Solve for x
    x = 179,345,416.18/12,328.20
  6. Step 6: Final answer
    x = 14,547.58

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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.