Home / 13,590,550.72-18,754,964-7,478,979.36

Finding the Fourth Proportional to 13,590,550.72, 18,754,964 and 7,478,979.36

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Solution

The fourth proportional to 13,590,550.72, 18,754,964 and 7,478,979.36 is: 10,320,993.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590,550.72 : 18,754,964 = 7,478,979.36 : x
  2. Step 2: Convert to fraction form
    13,590,550.72/18,754,964 = 7,478,979.36/x
  3. Step 3: Cross multiply
    13,590,550.72x = 18,754,964 × 7,478,979.36
  4. Step 4: Simplify right side
    13,590,550.72x = 140,267,988,653,543.05
  5. Step 5: Solve for x
    x = 140,267,988,653,543.05/13,590,550.72
  6. Step 6: Final answer
    x = 10,320,993.72

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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.