Home / 13,159,648.51-18,158,916.84-7,278,348.11

Finding the Fourth Proportional to 13,159,648.51, 18,158,916.84 and 7,278,348.11

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Solution

The fourth proportional to 13,159,648.51, 18,158,916.84 and 7,278,348.11 is: 10,043,347.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159,648.51 : 18,158,916.84 = 7,278,348.11 : x
  2. Step 2: Convert to fraction form
    13,159,648.51/18,158,916.84 = 7,278,348.11/x
  3. Step 3: Cross multiply
    13,159,648.51x = 18,158,916.84 × 7,278,348.11
  4. Step 4: Simplify right side
    13,159,648.51x = 132,166,918,062,061.17
  5. Step 5: Solve for x
    x = 132,166,918,062,061.17/13,159,648.51
  6. Step 6: Final answer
    x = 10,043,347.13

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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.