Home / 12,278,782.60-18,430,948.50-9,043,972.68

Finding the Fourth Proportional to 12,278,782.60, 18,430,948.50 and 9,043,972.68

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Solution

The fourth proportional to 12,278,782.60, 18,430,948.50 and 9,043,972.68 is: 13,575,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278,782.60 : 18,430,948.50 = 9,043,972.68 : x
  2. Step 2: Convert to fraction form
    12,278,782.60/18,430,948.50 = 9,043,972.68/x
  3. Step 3: Cross multiply
    12,278,782.60x = 18,430,948.50 × 9,043,972.68
  4. Step 4: Simplify right side
    12,278,782.60x = 166,688,994,700,486.97
  5. Step 5: Solve for x
    x = 166,688,994,700,486.97/12,278,782.60
  6. Step 6: Final answer
    x = 13,575,368.19

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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.