Home / 15,931.54-21,985.86-10,478.62

Finding the Fourth Proportional to 15,931.54, 21,985.86 and 10,478.62

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Solution

The fourth proportional to 15,931.54, 21,985.86 and 10,478.62 is: 14,460.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.54 : 21,985.86 = 10,478.62 : x
  2. Step 2: Convert to fraction form
    15,931.54/21,985.86 = 10,478.62/x
  3. Step 3: Cross multiply
    15,931.54x = 21,985.86 × 10,478.62
  4. Step 4: Simplify right side
    15,931.54x = 230,381,472.31
  5. Step 5: Solve for x
    x = 230,381,472.31/15,931.54
  6. Step 6: Final answer
    x = 14,460.72

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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.