Home / 13,421,650.16-18,523,980.84-7,915,630.20

Finding the Fourth Proportional to 13,421,650.16, 18,523,980.84 and 7,915,630.20

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Solution

The fourth proportional to 13,421,650.16, 18,523,980.84 and 7,915,630.20 is: 10,924,810.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,650.16 : 18,523,980.84 = 7,915,630.20 : x
  2. Step 2: Convert to fraction form
    13,421,650.16/18,523,980.84 = 7,915,630.20/x
  3. Step 3: Cross multiply
    13,421,650.16x = 18,523,980.84 × 7,915,630.20
  4. Step 4: Simplify right side
    13,421,650.16x = 146,628,982,161,325.38
  5. Step 5: Solve for x
    x = 146,628,982,161,325.38/13,421,650.16
  6. Step 6: Final answer
    x = 10,924,810.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.