Home / 15,686,904.81-21,648,454.32-8,717,876.10

Finding the Fourth Proportional to 15,686,904.81, 21,648,454.32 and 8,717,876.10

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Solution

The fourth proportional to 15,686,904.81, 21,648,454.32 and 8,717,876.10 is: 12,030,961.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,904.81 : 21,648,454.32 = 8,717,876.10 : x
  2. Step 2: Convert to fraction form
    15,686,904.81/21,648,454.32 = 8,717,876.10/x
  3. Step 3: Cross multiply
    15,686,904.81x = 21,648,454.32 × 8,717,876.10
  4. Step 4: Simplify right side
    15,686,904.81x = 188,728,542,518,269.75
  5. Step 5: Solve for x
    x = 188,728,542,518,269.75/15,686,904.81
  6. Step 6: Final answer
    x = 12,030,961.16

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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.