Home / 20,372,985.17-28,122,032.40-12,113,027.66

Finding the Fourth Proportional to 20,372,985.17, 28,122,032.40 and 12,113,027.66

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Solution

The fourth proportional to 20,372,985.17, 28,122,032.40 and 12,113,027.66 is: 16,720,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372,985.17 : 28,122,032.40 = 12,113,027.66 : x
  2. Step 2: Convert to fraction form
    20,372,985.17/28,122,032.40 = 12,113,027.66/x
  3. Step 3: Cross multiply
    20,372,985.17x = 28,122,032.40 × 12,113,027.66
  4. Step 4: Simplify right side
    20,372,985.17x = 340,642,956,316,616.19
  5. Step 5: Solve for x
    x = 340,642,956,316,616.19/20,372,985.17
  6. Step 6: Final answer
    x = 16,720,326.13

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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.