Home / 28,118.02-38,802.54-15,542.50

Finding the Fourth Proportional to 28,118.02, 38,802.54 and 15,542.50

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Solution

The fourth proportional to 28,118.02, 38,802.54 and 15,542.50 is: 21,448.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.02 : 38,802.54 = 15,542.50 : x
  2. Step 2: Convert to fraction form
    28,118.02/38,802.54 = 15,542.50/x
  3. Step 3: Cross multiply
    28,118.02x = 38,802.54 × 15,542.50
  4. Step 4: Simplify right side
    28,118.02x = 603,088,477.95
  5. Step 5: Solve for x
    x = 603,088,477.95/28,118.02
  6. Step 6: Final answer
    x = 21,448.47

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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.