Home / 15,307.68-21,133.80-10,011.36

Finding the Fourth Proportional to 15,307.68, 21,133.80 and 10,011.36

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Solution

The fourth proportional to 15,307.68, 21,133.80 and 10,011.36 is: 13,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.68 : 21,133.80 = 10,011.36 : x
  2. Step 2: Convert to fraction form
    15,307.68/21,133.80 = 10,011.36/x
  3. Step 3: Cross multiply
    15,307.68x = 21,133.80 × 10,011.36
  4. Step 4: Simplify right side
    15,307.68x = 211,578,079.97
  5. Step 5: Solve for x
    x = 211,578,079.97/15,307.68
  6. Step 6: Final answer
    x = 13,821.69

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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.