Home / 20,716,457.80-31,074,686.70-13,176,848.20

Finding the Fourth Proportional to 20,716,457.80, 31,074,686.70 and 13,176,848.20

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Solution

The fourth proportional to 20,716,457.80, 31,074,686.70 and 13,176,848.20 is: 19,765,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716,457.80 : 31,074,686.70 = 13,176,848.20 : x
  2. Step 2: Convert to fraction form
    20,716,457.80/31,074,686.70 = 13,176,848.20/x
  3. Step 3: Cross multiply
    20,716,457.80x = 31,074,686.70 × 13,176,848.20
  4. Step 4: Simplify right side
    20,716,457.80x = 409,466,429,508,458.94
  5. Step 5: Solve for x
    x = 409,466,429,508,458.94/20,716,457.80
  6. Step 6: Final answer
    x = 19,765,272.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.