Home / 29,124.40-40,138.34-21,152.76

Finding the Fourth Proportional to 29,124.40, 40,138.34 and 21,152.76

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Solution

The fourth proportional to 29,124.40, 40,138.34 and 21,152.76 is: 29,152.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,124.40 : 40,138.34 = 21,152.76 : x
  2. Step 2: Convert to fraction form
    29,124.40/40,138.34 = 21,152.76/x
  3. Step 3: Cross multiply
    29,124.40x = 40,138.34 × 21,152.76
  4. Step 4: Simplify right side
    29,124.40x = 849,036,672.82
  5. Step 5: Solve for x
    x = 849,036,672.82/29,124.40
  6. Step 6: Final answer
    x = 29,152.07

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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.