Home / 20,442,700.70-30,664,051.05-12,884,428.70

Finding the Fourth Proportional to 20,442,700.70, 30,664,051.05 and 12,884,428.70

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Solution

The fourth proportional to 20,442,700.70, 30,664,051.05 and 12,884,428.70 is: 19,326,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442,700.70 : 30,664,051.05 = 12,884,428.70 : x
  2. Step 2: Convert to fraction form
    20,442,700.70/30,664,051.05 = 12,884,428.70/x
  3. Step 3: Cross multiply
    20,442,700.70x = 30,664,051.05 × 12,884,428.70
  4. Step 4: Simplify right side
    20,442,700.70x = 395,088,779,406,885.12
  5. Step 5: Solve for x
    x = 395,088,779,406,885.12/20,442,700.70
  6. Step 6: Final answer
    x = 19,326,643.05

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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.