Home / 21,973.96-30,329.49-12,547.99

Finding the Fourth Proportional to 21,973.96, 30,329.49 and 12,547.99

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Solution

The fourth proportional to 21,973.96, 30,329.49 and 12,547.99 is: 17,319.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,973.96 : 30,329.49 = 12,547.99 : x
  2. Step 2: Convert to fraction form
    21,973.96/30,329.49 = 12,547.99/x
  3. Step 3: Cross multiply
    21,973.96x = 30,329.49 × 12,547.99
  4. Step 4: Simplify right side
    21,973.96x = 380,574,137.23
  5. Step 5: Solve for x
    x = 380,574,137.23/21,973.96
  6. Step 6: Final answer
    x = 17,319.32

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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.