Home / 20,590,228.20-28,402,709.49-12,841,818.42

Finding the Fourth Proportional to 20,590,228.20, 28,402,709.49 and 12,841,818.42

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Solution

The fourth proportional to 20,590,228.20, 28,402,709.49 and 12,841,818.42 is: 17,714,346.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590,228.20 : 28,402,709.49 = 12,841,818.42 : x
  2. Step 2: Convert to fraction form
    20,590,228.20/28,402,709.49 = 12,841,818.42/x
  3. Step 3: Cross multiply
    20,590,228.20x = 28,402,709.49 × 12,841,818.42
  4. Step 4: Simplify right side
    20,590,228.20x = 364,742,437,906,590.81
  5. Step 5: Solve for x
    x = 364,742,437,906,590.81/20,590,228.20
  6. Step 6: Final answer
    x = 17,714,346.55

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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.