Home / 38,430.60-53,034.68-21,436.32

Finding the Fourth Proportional to 38,430.60, 53,034.68 and 21,436.32

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Solution

The fourth proportional to 38,430.60, 53,034.68 and 21,436.32 is: 29,582.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,430.60 : 53,034.68 = 21,436.32 : x
  2. Step 2: Convert to fraction form
    38,430.60/53,034.68 = 21,436.32/x
  3. Step 3: Cross multiply
    38,430.60x = 53,034.68 × 21,436.32
  4. Step 4: Simplify right side
    38,430.60x = 1,136,868,371.58
  5. Step 5: Solve for x
    x = 1,136,868,371.58/38,430.60
  6. Step 6: Final answer
    x = 29,582.37

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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.