Home / 14,009.07-19,332.18-7,721.40

Finding the Fourth Proportional to 14,009.07, 19,332.18 and 7,721.40

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Solution

The fourth proportional to 14,009.07, 19,332.18 and 7,721.40 is: 10,655.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.07 : 19,332.18 = 7,721.40 : x
  2. Step 2: Convert to fraction form
    14,009.07/19,332.18 = 7,721.40/x
  3. Step 3: Cross multiply
    14,009.07x = 19,332.18 × 7,721.40
  4. Step 4: Simplify right side
    14,009.07x = 149,271,494.65
  5. Step 5: Solve for x
    x = 149,271,494.65/14,009.07
  6. Step 6: Final answer
    x = 10,655.35

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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.