Home / 39,547.79-54,575.98-21,642.80

Finding the Fourth Proportional to 39,547.79, 54,575.98 and 21,642.80

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Solution

The fourth proportional to 39,547.79, 54,575.98 and 21,642.80 is: 29,867.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,547.79 : 54,575.98 = 21,642.80 : x
  2. Step 2: Convert to fraction form
    39,547.79/54,575.98 = 21,642.80/x
  3. Step 3: Cross multiply
    39,547.79x = 54,575.98 × 21,642.80
  4. Step 4: Simplify right side
    39,547.79x = 1,181,176,692.96
  5. Step 5: Solve for x
    x = 1,181,176,692.96/39,547.79
  6. Step 6: Final answer
    x = 29,867.07

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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.