Home / 21,187,259.36-31,784,051.28-9,828,856.16

Finding the Fourth Proportional to 21,187,259.36, 31,784,051.28 and 9,828,856.16

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Solution

The fourth proportional to 21,187,259.36, 31,784,051.28 and 9,828,856.16 is: 14,744,751.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187,259.36 : 31,784,051.28 = 9,828,856.16 : x
  2. Step 2: Convert to fraction form
    21,187,259.36/31,784,051.28 = 9,828,856.16/x
  3. Step 3: Cross multiply
    21,187,259.36x = 31,784,051.28 × 9,828,856.16
  4. Step 4: Simplify right side
    21,187,259.36x = 312,400,868,213,183.88
  5. Step 5: Solve for x
    x = 312,400,868,213,183.88/21,187,259.36
  6. Step 6: Final answer
    x = 14,744,751.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.