Home / 13,681,987.80-20,510,151.30-5,168,045.40

Finding the Fourth Proportional to 13,681,987.80, 20,510,151.30 and 5,168,045.40

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Solution

The fourth proportional to 13,681,987.80, 20,510,151.30 and 5,168,045.40 is: 7,747,221.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681,987.80 : 20,510,151.30 = 5,168,045.40 : x
  2. Step 2: Convert to fraction form
    13,681,987.80/20,510,151.30 = 5,168,045.40/x
  3. Step 3: Cross multiply
    13,681,987.80x = 20,510,151.30 × 5,168,045.40
  4. Step 4: Simplify right side
    13,681,987.80x = 105,997,393,079,269.03
  5. Step 5: Solve for x
    x = 105,997,393,079,269.03/13,681,987.80
  6. Step 6: Final answer
    x = 7,747,221.72

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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.