Home / 21,572.53-32,130.88-20,612.77

Finding the Fourth Proportional to 21,572.53, 32,130.88 and 20,612.77

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Solution

The fourth proportional to 21,572.53, 32,130.88 and 20,612.77 is: 30,701.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.53 : 32,130.88 = 20,612.77 : x
  2. Step 2: Convert to fraction form
    21,572.53/32,130.88 = 20,612.77/x
  3. Step 3: Cross multiply
    21,572.53x = 32,130.88 × 20,612.77
  4. Step 4: Simplify right side
    21,572.53x = 662,306,439.34
  5. Step 5: Solve for x
    x = 662,306,439.34/21,572.53
  6. Step 6: Final answer
    x = 30,701.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.