Home / 20,863,861.22-28,791,699.54-11,569,931.48

Finding the Fourth Proportional to 20,863,861.22, 28,791,699.54 and 11,569,931.48

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Solution

The fourth proportional to 20,863,861.22, 28,791,699.54 and 11,569,931.48 is: 15,966,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863,861.22 : 28,791,699.54 = 11,569,931.48 : x
  2. Step 2: Convert to fraction form
    20,863,861.22/28,791,699.54 = 11,569,931.48/x
  3. Step 3: Cross multiply
    20,863,861.22x = 28,791,699.54 × 11,569,931.48
  4. Step 4: Simplify right side
    20,863,861.22x = 333,117,990,870,547.50
  5. Step 5: Solve for x
    x = 333,117,990,870,547.50/20,863,861.22
  6. Step 6: Final answer
    x = 15,966,267.57

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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.