Home / 21,312,411.60-31,968,617.40-12,802,357.20

Finding the Fourth Proportional to 21,312,411.60, 31,968,617.40 and 12,802,357.20

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Solution

The fourth proportional to 21,312,411.60, 31,968,617.40 and 12,802,357.20 is: 19,203,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,411.60 : 31,968,617.40 = 12,802,357.20 : x
  2. Step 2: Convert to fraction form
    21,312,411.60/31,968,617.40 = 12,802,357.20/x
  3. Step 3: Cross multiply
    21,312,411.60x = 31,968,617.40 × 12,802,357.20
  4. Step 4: Simplify right side
    21,312,411.60x = 409,273,659,144,935.25
  5. Step 5: Solve for x
    x = 409,273,659,144,935.25/21,312,411.60
  6. Step 6: Final answer
    x = 19,203,535.80

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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.