Home / 15,516.32-21,397.63-10,423.36

Finding the Fourth Proportional to 15,516.32, 21,397.63 and 10,423.36

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Solution

The fourth proportional to 15,516.32, 21,397.63 and 10,423.36 is: 14,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.32 : 21,397.63 = 10,423.36 : x
  2. Step 2: Convert to fraction form
    15,516.32/21,397.63 = 10,423.36/x
  3. Step 3: Cross multiply
    15,516.32x = 21,397.63 × 10,423.36
  4. Step 4: Simplify right side
    15,516.32x = 223,035,041.53
  5. Step 5: Solve for x
    x = 223,035,041.53/15,516.32
  6. Step 6: Final answer
    x = 14,374.22

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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.