Home / 20,689,682.17-28,550,287.10-12,316,607.79

Finding the Fourth Proportional to 20,689,682.17, 28,550,287.10 and 12,316,607.79

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Solution

The fourth proportional to 20,689,682.17, 28,550,287.10 and 12,316,607.79 is: 16,996,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,682.17 : 28,550,287.10 = 12,316,607.79 : x
  2. Step 2: Convert to fraction form
    20,689,682.17/28,550,287.10 = 12,316,607.79/x
  3. Step 3: Cross multiply
    20,689,682.17x = 28,550,287.10 × 12,316,607.79
  4. Step 4: Simplify right side
    20,689,682.17x = 351,642,688,533,388
  5. Step 5: Solve for x
    x = 351,642,688,533,388/20,689,682.17
  6. Step 6: Final answer
    x = 16,996,041.10

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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.