Home / 28,563.06-39,417-15,987.81

Finding the Fourth Proportional to 28,563.06, 39,417 and 15,987.81

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Solution

The fourth proportional to 28,563.06, 39,417 and 15,987.81 is: 22,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.06 : 39,417 = 15,987.81 : x
  2. Step 2: Convert to fraction form
    28,563.06/39,417 = 15,987.81/x
  3. Step 3: Cross multiply
    28,563.06x = 39,417 × 15,987.81
  4. Step 4: Simplify right side
    28,563.06x = 630,191,506.77
  5. Step 5: Solve for x
    x = 630,191,506.77/28,563.06
  6. Step 6: Final answer
    x = 22,063.17

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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.