Home / 39,064.95-53,909.01-21,159.90

Finding the Fourth Proportional to 39,064.95, 53,909.01 and 21,159.90

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Solution

The fourth proportional to 39,064.95, 53,909.01 and 21,159.90 is: 29,200.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,064.95 : 53,909.01 = 21,159.90 : x
  2. Step 2: Convert to fraction form
    39,064.95/53,909.01 = 21,159.90/x
  3. Step 3: Cross multiply
    39,064.95x = 53,909.01 × 21,159.90
  4. Step 4: Simplify right side
    39,064.95x = 1,140,709,260.70
  5. Step 5: Solve for x
    x = 1,140,709,260.70/39,064.95
  6. Step 6: Final answer
    x = 29,200.33

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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.