Home / 21,168,124.20-31,752,186.30-12,546,095.40

Finding the Fourth Proportional to 21,168,124.20, 31,752,186.30 and 12,546,095.40

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Solution

The fourth proportional to 21,168,124.20, 31,752,186.30 and 12,546,095.40 is: 18,819,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168,124.20 : 31,752,186.30 = 12,546,095.40 : x
  2. Step 2: Convert to fraction form
    21,168,124.20/31,752,186.30 = 12,546,095.40/x
  3. Step 3: Cross multiply
    21,168,124.20x = 31,752,186.30 × 12,546,095.40
  4. Step 4: Simplify right side
    21,168,124.20x = 398,365,958,478,373.06
  5. Step 5: Solve for x
    x = 398,365,958,478,373.06/21,168,124.20
  6. Step 6: Final answer
    x = 18,819,143.10

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1.5x scale

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.