Home / 21,970.51-30,319.85-13,477.32

Finding the Fourth Proportional to 21,970.51, 30,319.85 and 13,477.32

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Solution

The fourth proportional to 21,970.51, 30,319.85 and 13,477.32 is: 18,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.51 : 30,319.85 = 13,477.32 : x
  2. Step 2: Convert to fraction form
    21,970.51/30,319.85 = 13,477.32/x
  3. Step 3: Cross multiply
    21,970.51x = 30,319.85 × 13,477.32
  4. Step 4: Simplify right side
    21,970.51x = 408,630,354.50
  5. Step 5: Solve for x
    x = 408,630,354.50/21,970.51
  6. Step 6: Final answer
    x = 18,599.04

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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.