Home / 28,356.01-39,136.47-16,420.46

Finding the Fourth Proportional to 28,356.01, 39,136.47 and 16,420.46

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Solution

The fourth proportional to 28,356.01, 39,136.47 and 16,420.46 is: 22,663.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.01 : 39,136.47 = 16,420.46 : x
  2. Step 2: Convert to fraction form
    28,356.01/39,136.47 = 16,420.46/x
  3. Step 3: Cross multiply
    28,356.01x = 39,136.47 × 16,420.46
  4. Step 4: Simplify right side
    28,356.01x = 642,638,582.92
  5. Step 5: Solve for x
    x = 642,638,582.92/28,356.01
  6. Step 6: Final answer
    x = 22,663.23

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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.