Home / 15,533.32-21,421.08-10,440.36

Finding the Fourth Proportional to 15,533.32, 21,421.08 and 10,440.36

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Solution

The fourth proportional to 15,533.32, 21,421.08 and 10,440.36 is: 14,397.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.32 : 21,421.08 = 10,440.36 : x
  2. Step 2: Convert to fraction form
    15,533.32/21,421.08 = 10,440.36/x
  3. Step 3: Cross multiply
    15,533.32x = 21,421.08 × 10,440.36
  4. Step 4: Simplify right side
    15,533.32x = 223,643,786.79
  5. Step 5: Solve for x
    x = 223,643,786.79/15,533.32
  6. Step 6: Final answer
    x = 14,397.68

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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.