Home / 20,146,985.72-27,807,327.74-12,803,386.91

Finding the Fourth Proportional to 20,146,985.72, 27,807,327.74 and 12,803,386.91

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Solution

The fourth proportional to 20,146,985.72, 27,807,327.74 and 12,803,386.91 is: 17,671,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146,985.72 : 27,807,327.74 = 12,803,386.91 : x
  2. Step 2: Convert to fraction form
    20,146,985.72/27,807,327.74 = 12,803,386.91/x
  3. Step 3: Cross multiply
    20,146,985.72x = 27,807,327.74 × 12,803,386.91
  4. Step 4: Simplify right side
    20,146,985.72x = 356,027,975,881,367.69
  5. Step 5: Solve for x
    x = 356,027,975,881,367.69/20,146,985.72
  6. Step 6: Final answer
    x = 17,671,525.70

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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.