Home / 38,478.96-53,101.08-21,711.60

Finding the Fourth Proportional to 38,478.96, 53,101.08 and 21,711.60

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Solution

The fourth proportional to 38,478.96, 53,101.08 and 21,711.60 is: 29,962.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,478.96 : 53,101.08 = 21,711.60 : x
  2. Step 2: Convert to fraction form
    38,478.96/53,101.08 = 21,711.60/x
  3. Step 3: Cross multiply
    38,478.96x = 53,101.08 × 21,711.60
  4. Step 4: Simplify right side
    38,478.96x = 1,152,909,408.53
  5. Step 5: Solve for x
    x = 1,152,909,408.53/38,478.96
  6. Step 6: Final answer
    x = 29,962.07

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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.