Home / 18,702,080.40-28,005,881.40-12,277,549.20

Finding the Fourth Proportional to 18,702,080.40, 28,005,881.40 and 12,277,549.20

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Solution

The fourth proportional to 18,702,080.40, 28,005,881.40 and 12,277,549.20 is: 18,385,312.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,080.40 : 28,005,881.40 = 12,277,549.20 : x
  2. Step 2: Convert to fraction form
    18,702,080.40/28,005,881.40 = 12,277,549.20/x
  3. Step 3: Cross multiply
    18,702,080.40x = 28,005,881.40 × 12,277,549.20
  4. Step 4: Simplify right side
    18,702,080.40x = 343,843,586,777,864.81
  5. Step 5: Solve for x
    x = 343,843,586,777,864.81/18,702,080.40
  6. Step 6: Final answer
    x = 18,385,312.19

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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.