Home / 28,590,258.40-42,892,990.80-12,409,266.40

Finding the Fourth Proportional to 28,590,258.40, 42,892,990.80 and 12,409,266.40

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Solution

The fourth proportional to 28,590,258.40, 42,892,990.80 and 12,409,266.40 is: 18,617,199.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590,258.40 : 42,892,990.80 = 12,409,266.40 : x
  2. Step 2: Convert to fraction form
    28,590,258.40/42,892,990.80 = 12,409,266.40/x
  3. Step 3: Cross multiply
    28,590,258.40x = 42,892,990.80 × 12,409,266.40
  4. Step 4: Simplify right side
    28,590,258.40x = 532,270,549,529,949.12
  5. Step 5: Solve for x
    x = 532,270,549,529,949.12/28,590,258.40
  6. Step 6: Final answer
    x = 18,617,199.68

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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.