Home / 15,721.04-21,698.12-9,011.16

Finding the Fourth Proportional to 15,721.04, 21,698.12 and 9,011.16

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Solution

The fourth proportional to 15,721.04, 21,698.12 and 9,011.16 is: 12,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.04 : 21,698.12 = 9,011.16 : x
  2. Step 2: Convert to fraction form
    15,721.04/21,698.12 = 9,011.16/x
  3. Step 3: Cross multiply
    15,721.04x = 21,698.12 × 9,011.16
  4. Step 4: Simplify right side
    15,721.04x = 195,525,285.26
  5. Step 5: Solve for x
    x = 195,525,285.26/15,721.04
  6. Step 6: Final answer
    x = 12,437.17

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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.