Home / 20,421,750.77-28,182,020.54-11,129,323.04

Finding the Fourth Proportional to 20,421,750.77, 28,182,020.54 and 11,129,323.04

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Solution

The fourth proportional to 20,421,750.77, 28,182,020.54 and 11,129,323.04 is: 15,358,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,750.77 : 28,182,020.54 = 11,129,323.04 : x
  2. Step 2: Convert to fraction form
    20,421,750.77/28,182,020.54 = 11,129,323.04/x
  3. Step 3: Cross multiply
    20,421,750.77x = 28,182,020.54 × 11,129,323.04
  4. Step 4: Simplify right side
    20,421,750.77x = 313,646,810,313,018.50
  5. Step 5: Solve for x
    x = 313,646,810,313,018.50/20,421,750.77
  6. Step 6: Final answer
    x = 15,358,468.23

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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.