Home / 21,117.19-31,681.77-10,574.49

Finding the Fourth Proportional to 21,117.19, 31,681.77 and 10,574.49

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Solution

The fourth proportional to 21,117.19, 31,681.77 and 10,574.49 is: 15,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.19 : 31,681.77 = 10,574.49 : x
  2. Step 2: Convert to fraction form
    21,117.19/31,681.77 = 10,574.49/x
  3. Step 3: Cross multiply
    21,117.19x = 31,681.77 × 10,574.49
  4. Step 4: Simplify right side
    21,117.19x = 335,018,461.05
  5. Step 5: Solve for x
    x = 335,018,461.05/21,117.19
  6. Step 6: Final answer
    x = 15,864.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.