Home / 10,903.60-15,115.99-10,312.30

Finding the Fourth Proportional to 10,903.60, 15,115.99 and 10,312.30

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Solution

The fourth proportional to 10,903.60, 15,115.99 and 10,312.30 is: 14,296.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.60 : 15,115.99 = 10,312.30 : x
  2. Step 2: Convert to fraction form
    10,903.60/15,115.99 = 10,312.30/x
  3. Step 3: Cross multiply
    10,903.60x = 15,115.99 × 10,312.30
  4. Step 4: Simplify right side
    10,903.60x = 155,880,623.68
  5. Step 5: Solve for x
    x = 155,880,623.68/10,903.60
  6. Step 6: Final answer
    x = 14,296.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.