Home / 12,478,970.36-17,221,332.30-7,047,278.84

Finding the Fourth Proportional to 12,478,970.36, 17,221,332.30 and 7,047,278.84

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Solution

The fourth proportional to 12,478,970.36, 17,221,332.30 and 7,047,278.84 is: 9,725,444.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,970.36 : 17,221,332.30 = 7,047,278.84 : x
  2. Step 2: Convert to fraction form
    12,478,970.36/17,221,332.30 = 7,047,278.84/x
  3. Step 3: Cross multiply
    12,478,970.36x = 17,221,332.30 × 7,047,278.84
  4. Step 4: Simplify right side
    12,478,970.36x = 121,363,530,714,398.53
  5. Step 5: Solve for x
    x = 121,363,530,714,398.53/12,478,970.36
  6. Step 6: Final answer
    x = 9,725,444.26

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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.