Home / 12,127,957.40-18,191,936.10-7,344,988.40

Finding the Fourth Proportional to 12,127,957.40, 18,191,936.10 and 7,344,988.40

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Solution

The fourth proportional to 12,127,957.40, 18,191,936.10 and 7,344,988.40 is: 11,017,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,957.40 : 18,191,936.10 = 7,344,988.40 : x
  2. Step 2: Convert to fraction form
    12,127,957.40/18,191,936.10 = 7,344,988.40/x
  3. Step 3: Cross multiply
    12,127,957.40x = 18,191,936.10 × 7,344,988.40
  4. Step 4: Simplify right side
    12,127,957.40x = 133,619,559,628,041.25
  5. Step 5: Solve for x
    x = 133,619,559,628,041.25/12,127,957.40
  6. Step 6: Final answer
    x = 11,017,482.60

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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.