Home / 20,779,782.12-28,657,534.32-13,045,545.72

Finding the Fourth Proportional to 20,779,782.12, 28,657,534.32 and 13,045,545.72

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Solution

The fourth proportional to 20,779,782.12, 28,657,534.32 and 13,045,545.72 is: 17,991,197.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779,782.12 : 28,657,534.32 = 13,045,545.72 : x
  2. Step 2: Convert to fraction form
    20,779,782.12/28,657,534.32 = 13,045,545.72/x
  3. Step 3: Cross multiply
    20,779,782.12x = 28,657,534.32 × 13,045,545.72
  4. Step 4: Simplify right side
    20,779,782.12x = 373,853,174,194,029.12
  5. Step 5: Solve for x
    x = 373,853,174,194,029.12/20,779,782.12
  6. Step 6: Final answer
    x = 17,991,197.98

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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.