Home / 19,870.30-27,421.47-10,917.24

Finding the Fourth Proportional to 19,870.30, 27,421.47 and 10,917.24

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Solution

The fourth proportional to 19,870.30, 27,421.47 and 10,917.24 is: 15,066.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.30 : 27,421.47 = 10,917.24 : x
  2. Step 2: Convert to fraction form
    19,870.30/27,421.47 = 10,917.24/x
  3. Step 3: Cross multiply
    19,870.30x = 27,421.47 × 10,917.24
  4. Step 4: Simplify right side
    19,870.30x = 299,366,632.04
  5. Step 5: Solve for x
    x = 299,366,632.04/19,870.30
  6. Step 6: Final answer
    x = 15,066.03

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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.