Home / 21,987,812.16-30,330,574.02-13,713,509.16

Finding the Fourth Proportional to 21,987,812.16, 30,330,574.02 and 13,713,509.16

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Solution

The fourth proportional to 21,987,812.16, 30,330,574.02 and 13,713,509.16 is: 18,916,779.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987,812.16 : 30,330,574.02 = 13,713,509.16 : x
  2. Step 2: Convert to fraction form
    21,987,812.16/30,330,574.02 = 13,713,509.16/x
  3. Step 3: Cross multiply
    21,987,812.16x = 30,330,574.02 × 13,713,509.16
  4. Step 4: Simplify right side
    21,987,812.16x = 415,938,604,651,328
  5. Step 5: Solve for x
    x = 415,938,604,651,328/21,987,812.16
  6. Step 6: Final answer
    x = 18,916,779.97

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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.