Home / 20,319.63-28,041.65-11,368.68

Finding the Fourth Proportional to 20,319.63, 28,041.65 and 11,368.68

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Solution

The fourth proportional to 20,319.63, 28,041.65 and 11,368.68 is: 15,689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.63 : 28,041.65 = 11,368.68 : x
  2. Step 2: Convert to fraction form
    20,319.63/28,041.65 = 11,368.68/x
  3. Step 3: Cross multiply
    20,319.63x = 28,041.65 × 11,368.68
  4. Step 4: Simplify right side
    20,319.63x = 318,796,545.52
  5. Step 5: Solve for x
    x = 318,796,545.52/20,319.63
  6. Step 6: Final answer
    x = 15,689.09

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1.5x scale

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.