Home / 12,127,921.45-18,191,882.18-9,975,585.40

Finding the Fourth Proportional to 12,127,921.45, 18,191,882.18 and 9,975,585.40

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Solution

The fourth proportional to 12,127,921.45, 18,191,882.18 and 9,975,585.40 is: 14,963,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,921.45 : 18,191,882.18 = 9,975,585.40 : x
  2. Step 2: Convert to fraction form
    12,127,921.45/18,191,882.18 = 9,975,585.40/x
  3. Step 3: Cross multiply
    12,127,921.45x = 18,191,882.18 × 9,975,585.40
  4. Step 4: Simplify right side
    12,127,921.45x = 181,474,674,273,328.19
  5. Step 5: Solve for x
    x = 181,474,674,273,328.19/12,127,921.45
  6. Step 6: Final answer
    x = 14,963,378.10

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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.