Home / 13,420,888.02-18,521,038.53-7,619,551.38

Finding the Fourth Proportional to 13,420,888.02, 18,521,038.53 and 7,619,551.38

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Solution

The fourth proportional to 13,420,888.02, 18,521,038.53 and 7,619,551.38 is: 10,515,101.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420,888.02 : 18,521,038.53 = 7,619,551.38 : x
  2. Step 2: Convert to fraction form
    13,420,888.02/18,521,038.53 = 7,619,551.38/x
  3. Step 3: Cross multiply
    13,420,888.02x = 18,521,038.53 × 7,619,551.38
  4. Step 4: Simplify right side
    13,420,888.02x = 141,122,004,690,294.69
  5. Step 5: Solve for x
    x = 141,122,004,690,294.69/13,420,888.02
  6. Step 6: Final answer
    x = 10,515,101.87

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1.5x scale

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.