Home / 30,752.61-42,445.50-20,136.07

Finding the Fourth Proportional to 30,752.61, 42,445.50 and 20,136.07

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Solution

The fourth proportional to 30,752.61, 42,445.50 and 20,136.07 is: 27,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,752.61 : 42,445.50 = 20,136.07 : x
  2. Step 2: Convert to fraction form
    30,752.61/42,445.50 = 20,136.07/x
  3. Step 3: Cross multiply
    30,752.61x = 42,445.50 × 20,136.07
  4. Step 4: Simplify right side
    30,752.61x = 854,685,559.19
  5. Step 5: Solve for x
    x = 854,685,559.19/30,752.61
  6. Step 6: Final answer
    x = 27,792.29

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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.