Home / 15,456.16-21,320.40-10,677.28

Finding the Fourth Proportional to 15,456.16, 21,320.40 and 10,677.28

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Solution

The fourth proportional to 15,456.16, 21,320.40 and 10,677.28 is: 14,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.16 : 21,320.40 = 10,677.28 : x
  2. Step 2: Convert to fraction form
    15,456.16/21,320.40 = 10,677.28/x
  3. Step 3: Cross multiply
    15,456.16x = 21,320.40 × 10,677.28
  4. Step 4: Simplify right side
    15,456.16x = 227,643,880.51
  5. Step 5: Solve for x
    x = 227,643,880.51/15,456.16
  6. Step 6: Final answer
    x = 14,728.36

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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.