Home / 38,685,865.04-53,384,385.12-21,279,400.16

Finding the Fourth Proportional to 38,685,865.04, 53,384,385.12 and 21,279,400.16

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Solution

The fourth proportional to 38,685,865.04, 53,384,385.12 and 21,279,400.16 is: 29,364,412.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,685,865.04 : 53,384,385.12 = 21,279,400.16 : x
  2. Step 2: Convert to fraction form
    38,685,865.04/53,384,385.12 = 21,279,400.16/x
  3. Step 3: Cross multiply
    38,685,865.04x = 53,384,385.12 × 21,279,400.16
  4. Step 4: Simplify right side
    38,685,865.04x = 1,135,987,693,264,029.50
  5. Step 5: Solve for x
    x = 1,135,987,693,264,029.50/38,685,865.04
  6. Step 6: Final answer
    x = 29,364,412.35

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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.