Home / 15,318,019-21,138,895.86-8,348,774.20

Finding the Fourth Proportional to 15,318,019, 21,138,895.86 and 8,348,774.20

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Solution

The fourth proportional to 15,318,019, 21,138,895.86 and 8,348,774.20 is: 11,521,324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318,019 : 21,138,895.86 = 8,348,774.20 : x
  2. Step 2: Convert to fraction form
    15,318,019/21,138,895.86 = 8,348,774.20/x
  3. Step 3: Cross multiply
    15,318,019x = 21,138,895.86 × 8,348,774.20
  4. Step 4: Simplify right side
    15,318,019x = 176,483,868,372,454.81
  5. Step 5: Solve for x
    x = 176,483,868,372,454.81/15,318,019
  6. Step 6: Final answer
    x = 11,521,324.55

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1.5x scale

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.