Home / 21,106,406,908.40-31,690,851,220.20-11,808,724,578.80

Finding the Fourth Proportional to 21,106,406,908.40, 31,690,851,220.20 and 11,808,724,578.80

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Solution

The fourth proportional to 21,106,406,908.40, 31,690,851,220.20 and 11,808,724,578.80 is: 17,730,565,669.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106,406,908.40 : 31,690,851,220.20 = 11,808,724,578.80 : x
  2. Step 2: Convert to fraction form
    21,106,406,908.40/31,690,851,220.20 = 11,808,724,578.80/x
  3. Step 3: Cross multiply
    21,106,406,908.40x = 31,690,851,220.20 × 11,808,724,578.80
  4. Step 4: Simplify right side
    21,106,406,908.40x = 374,228,533,727,069,667,328
  5. Step 5: Solve for x
    x = 374,228,533,727,069,667,328/21,106,406,908.40
  6. Step 6: Final answer
    x = 17,730,565,669.05

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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.