Home / 28,117.75-38,802.57-15,542.50

Finding the Fourth Proportional to 28,117.75, 38,802.57 and 15,542.50

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Solution

The fourth proportional to 28,117.75, 38,802.57 and 15,542.50 is: 21,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.75 : 38,802.57 = 15,542.50 : x
  2. Step 2: Convert to fraction form
    28,117.75/38,802.57 = 15,542.50/x
  3. Step 3: Cross multiply
    28,117.75x = 38,802.57 × 15,542.50
  4. Step 4: Simplify right side
    28,117.75x = 603,088,866.51
  5. Step 5: Solve for x
    x = 603,088,866.51/28,117.75
  6. Step 6: Final answer
    x = 21,448.69

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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.