Home / 21,434.34-32,151.51-8,947.55

Finding the Fourth Proportional to 21,434.34, 32,151.51 and 8,947.55

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Solution

The fourth proportional to 21,434.34, 32,151.51 and 8,947.55 is: 13,421.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.34 : 32,151.51 = 8,947.55 : x
  2. Step 2: Convert to fraction form
    21,434.34/32,151.51 = 8,947.55/x
  3. Step 3: Cross multiply
    21,434.34x = 32,151.51 × 8,947.55
  4. Step 4: Simplify right side
    21,434.34x = 287,677,037.81
  5. Step 5: Solve for x
    x = 287,677,037.81/21,434.34
  6. Step 6: Final answer
    x = 13,421.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.