Home / 13,611,125.70-20,416,688.55-12,123,090.90

Finding the Fourth Proportional to 13,611,125.70, 20,416,688.55 and 12,123,090.90

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Solution

The fourth proportional to 13,611,125.70, 20,416,688.55 and 12,123,090.90 is: 18,184,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611,125.70 : 20,416,688.55 = 12,123,090.90 : x
  2. Step 2: Convert to fraction form
    13,611,125.70/20,416,688.55 = 12,123,090.90/x
  3. Step 3: Cross multiply
    13,611,125.70x = 20,416,688.55 × 12,123,090.90
  4. Step 4: Simplify right side
    13,611,125.70x = 247,513,371,168,639.22
  5. Step 5: Solve for x
    x = 247,513,371,168,639.22/13,611,125.70
  6. Step 6: Final answer
    x = 18,184,636.35

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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.