Home / 10,340.40-15,492.30-9,997.80

Finding the Fourth Proportional to 10,340.40, 15,492.30 and 9,997.80

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Solution

The fourth proportional to 10,340.40, 15,492.30 and 9,997.80 is: 14,979.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,340.40 : 15,492.30 = 9,997.80 : x
  2. Step 2: Convert to fraction form
    10,340.40/15,492.30 = 9,997.80/x
  3. Step 3: Cross multiply
    10,340.40x = 15,492.30 × 9,997.80
  4. Step 4: Simplify right side
    10,340.40x = 154,888,916.94
  5. Step 5: Solve for x
    x = 154,888,916.94/10,340.40
  6. Step 6: Final answer
    x = 14,979.01

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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.