Home / 28,303.04-39,058.72-15,728.96

Finding the Fourth Proportional to 28,303.04, 39,058.72 and 15,728.96

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Solution

The fourth proportional to 28,303.04, 39,058.72 and 15,728.96 is: 21,706.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,303.04 : 39,058.72 = 15,728.96 : x
  2. Step 2: Convert to fraction form
    28,303.04/39,058.72 = 15,728.96/x
  3. Step 3: Cross multiply
    28,303.04x = 39,058.72 × 15,728.96
  4. Step 4: Simplify right side
    28,303.04x = 614,353,044.53
  5. Step 5: Solve for x
    x = 614,353,044.53/28,303.04
  6. Step 6: Final answer
    x = 21,706.26

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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.