Home / 15,686,878.90-21,648,418.58-8,717,850.18

Finding the Fourth Proportional to 15,686,878.90, 21,648,418.58 and 8,717,850.18

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Solution

The fourth proportional to 15,686,878.90, 21,648,418.58 and 8,717,850.18 is: 12,030,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,878.90 : 21,648,418.58 = 8,717,850.18 : x
  2. Step 2: Convert to fraction form
    15,686,878.90/21,648,418.58 = 8,717,850.18/x
  3. Step 3: Cross multiply
    15,686,878.90x = 21,648,418.58 × 8,717,850.18
  4. Step 4: Simplify right side
    15,686,878.90x = 188,727,669,770,779.09
  5. Step 5: Solve for x
    x = 188,727,669,770,779.09/15,686,878.90
  6. Step 6: Final answer
    x = 12,030,925.40

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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.