Home / 15,685,920.53-21,645,779.40-8,716,448.42

Finding the Fourth Proportional to 15,685,920.53, 21,645,779.40 and 8,716,448.42

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Solution

The fourth proportional to 15,685,920.53, 21,645,779.40 and 8,716,448.42 is: 12,028,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685,920.53 : 21,645,779.40 = 8,716,448.42 : x
  2. Step 2: Convert to fraction form
    15,685,920.53/21,645,779.40 = 8,716,448.42/x
  3. Step 3: Cross multiply
    15,685,920.53x = 21,645,779.40 × 8,716,448.42
  4. Step 4: Simplify right side
    15,685,920.53x = 188,674,319,623,741.28
  5. Step 5: Solve for x
    x = 188,674,319,623,741.28/15,685,920.53
  6. Step 6: Final answer
    x = 12,028,259.31

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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.