Home / 21,018.57-31,547.54-10,637.61

Finding the Fourth Proportional to 21,018.57, 31,547.54 and 10,637.61

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Solution

The fourth proportional to 21,018.57, 31,547.54 and 10,637.61 is: 15,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.57 : 31,547.54 = 10,637.61 : x
  2. Step 2: Convert to fraction form
    21,018.57/31,547.54 = 10,637.61/x
  3. Step 3: Cross multiply
    21,018.57x = 31,547.54 × 10,637.61
  4. Step 4: Simplify right side
    21,018.57x = 335,590,373.79
  5. Step 5: Solve for x
    x = 335,590,373.79/21,018.57
  6. Step 6: Final answer
    x = 15,966.38

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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.