Home / 28,514.90-42,779.65-11,869.40

Finding the Fourth Proportional to 28,514.90, 42,779.65 and 11,869.40

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Solution

The fourth proportional to 28,514.90, 42,779.65 and 11,869.40 is: 17,807.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.90 : 42,779.65 = 11,869.40 : x
  2. Step 2: Convert to fraction form
    28,514.90/42,779.65 = 11,869.40/x
  3. Step 3: Cross multiply
    28,514.90x = 42,779.65 × 11,869.40
  4. Step 4: Simplify right side
    28,514.90x = 507,768,777.71
  5. Step 5: Solve for x
    x = 507,768,777.71/28,514.90
  6. Step 6: Final answer
    x = 17,807.14

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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.