Home / 20,534.02-28,336.95-11,581.51

Finding the Fourth Proportional to 20,534.02, 28,336.95 and 11,581.51

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Solution

The fourth proportional to 20,534.02, 28,336.95 and 11,581.51 is: 15,982.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.02 : 28,336.95 = 11,581.51 : x
  2. Step 2: Convert to fraction form
    20,534.02/28,336.95 = 11,581.51/x
  3. Step 3: Cross multiply
    20,534.02x = 28,336.95 × 11,581.51
  4. Step 4: Simplify right side
    20,534.02x = 328,184,669.79
  5. Step 5: Solve for x
    x = 328,184,669.79/20,534.02
  6. Step 6: Final answer
    x = 15,982.49

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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.