Home / 21,430.03-32,129.48-8,953.63

Finding the Fourth Proportional to 21,430.03, 32,129.48 and 8,953.63

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Solution

The fourth proportional to 21,430.03, 32,129.48 and 8,953.63 is: 13,423.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.03 : 32,129.48 = 8,953.63 : x
  2. Step 2: Convert to fraction form
    21,430.03/32,129.48 = 8,953.63/x
  3. Step 3: Cross multiply
    21,430.03x = 32,129.48 × 8,953.63
  4. Step 4: Simplify right side
    21,430.03x = 287,675,366.72
  5. Step 5: Solve for x
    x = 287,675,366.72/21,430.03
  6. Step 6: Final answer
    x = 13,423.93

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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.