Home / 21,870,646.99-30,182,409.16-12,578,223.35

Finding the Fourth Proportional to 21,870,646.99, 30,182,409.16 and 12,578,223.35

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Solution

The fourth proportional to 21,870,646.99, 30,182,409.16 and 12,578,223.35 is: 17,358,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,870,646.99 : 30,182,409.16 = 12,578,223.35 : x
  2. Step 2: Convert to fraction form
    21,870,646.99/30,182,409.16 = 12,578,223.35/x
  3. Step 3: Cross multiply
    21,870,646.99x = 30,182,409.16 × 12,578,223.35
  4. Step 4: Simplify right side
    21,870,646.99x = 379,641,083,699,576.31
  5. Step 5: Solve for x
    x = 379,641,083,699,576.31/21,870,646.99
  6. Step 6: Final answer
    x = 17,358,475.22

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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.