Home / 15,119,429,936.66-20,861,698,436.96-8,688,007,226.28

Finding the Fourth Proportional to 15,119,429,936.66, 20,861,698,436.96 and 8,688,007,226.28

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Solution

The fourth proportional to 15,119,429,936.66, 20,861,698,436.96 and 8,688,007,226.28 is: 11,987,660,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119,429,936.66 : 20,861,698,436.96 = 8,688,007,226.28 : x
  2. Step 2: Convert to fraction form
    15,119,429,936.66/20,861,698,436.96 = 8,688,007,226.28/x
  3. Step 3: Cross multiply
    15,119,429,936.66x = 20,861,698,436.96 × 8,688,007,226.28
  4. Step 4: Simplify right side
    15,119,429,936.66x = 181,246,586,772,739,260,416
  5. Step 5: Solve for x
    x = 181,246,586,772,739,260,416/15,119,429,936.66
  6. Step 6: Final answer
    x = 11,987,660,085.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.