Home / 13,457,320.50-18,570,865.32-7,655,978.58

Finding the Fourth Proportional to 13,457,320.50, 18,570,865.32 and 7,655,978.58

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Solution

The fourth proportional to 13,457,320.50, 18,570,865.32 and 7,655,978.58 is: 10,565,115.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457,320.50 : 18,570,865.32 = 7,655,978.58 : x
  2. Step 2: Convert to fraction form
    13,457,320.50/18,570,865.32 = 7,655,978.58/x
  3. Step 3: Cross multiply
    13,457,320.50x = 18,570,865.32 × 7,655,978.58
  4. Step 4: Simplify right side
    13,457,320.50x = 142,178,147,101,984.84
  5. Step 5: Solve for x
    x = 142,178,147,101,984.84/13,457,320.50
  6. Step 6: Final answer
    x = 10,565,115.63

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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.