Home / 28,219.04-38,941.68-15,643.52

Finding the Fourth Proportional to 28,219.04, 38,941.68 and 15,643.52

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Solution

The fourth proportional to 28,219.04, 38,941.68 and 15,643.52 is: 21,587.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.04 : 38,941.68 = 15,643.52 : x
  2. Step 2: Convert to fraction form
    28,219.04/38,941.68 = 15,643.52/x
  3. Step 3: Cross multiply
    28,219.04x = 38,941.68 × 15,643.52
  4. Step 4: Simplify right side
    28,219.04x = 609,184,949.91
  5. Step 5: Solve for x
    x = 609,184,949.91/28,219.04
  6. Step 6: Final answer
    x = 21,587.73

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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.