Home / 35,343.63-48,781.32-21,000.72

Finding the Fourth Proportional to 35,343.63, 48,781.32 and 21,000.72

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Solution

The fourth proportional to 35,343.63, 48,781.32 and 21,000.72 is: 28,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,343.63 : 48,781.32 = 21,000.72 : x
  2. Step 2: Convert to fraction form
    35,343.63/48,781.32 = 21,000.72/x
  3. Step 3: Cross multiply
    35,343.63x = 48,781.32 × 21,000.72
  4. Step 4: Simplify right side
    35,343.63x = 1,024,442,842.55
  5. Step 5: Solve for x
    x = 1,024,442,842.55/35,343.63
  6. Step 6: Final answer
    x = 28,985.22

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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.