Home / 13,128,965.86-18,103,689.93-8,536,771.30

Finding the Fourth Proportional to 13,128,965.86, 18,103,689.93 and 8,536,771.30

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Solution

The fourth proportional to 13,128,965.86, 18,103,689.93 and 8,536,771.30 is: 11,771,457.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128,965.86 : 18,103,689.93 = 8,536,771.30 : x
  2. Step 2: Convert to fraction form
    13,128,965.86/18,103,689.93 = 8,536,771.30/x
  3. Step 3: Cross multiply
    13,128,965.86x = 18,103,689.93 × 8,536,771.30
  4. Step 4: Simplify right side
    13,128,965.86x = 154,547,060,618,523.03
  5. Step 5: Solve for x
    x = 154,547,060,618,523.03/13,128,965.86
  6. Step 6: Final answer
    x = 11,771,457.27

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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.