Home / 12,721,404.61-17,555,525.08-6,920,172.51

Finding the Fourth Proportional to 12,721,404.61, 17,555,525.08 and 6,920,172.51

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Solution

The fourth proportional to 12,721,404.61, 17,555,525.08 and 6,920,172.51 is: 9,549,830.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721,404.61 : 17,555,525.08 = 6,920,172.51 : x
  2. Step 2: Convert to fraction form
    12,721,404.61/17,555,525.08 = 6,920,172.51/x
  3. Step 3: Cross multiply
    12,721,404.61x = 17,555,525.08 × 6,920,172.51
  4. Step 4: Simplify right side
    12,721,404.61x = 121,487,262,022,630.67
  5. Step 5: Solve for x
    x = 121,487,262,022,630.67/12,721,404.61
  6. Step 6: Final answer
    x = 9,549,830.84

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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.