Home / 13,152.07-19,731.75-7,312.78

Finding the Fourth Proportional to 13,152.07, 19,731.75 and 7,312.78

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Solution

The fourth proportional to 13,152.07, 19,731.75 and 7,312.78 is: 10,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.07 : 19,731.75 = 7,312.78 : x
  2. Step 2: Convert to fraction form
    13,152.07/19,731.75 = 7,312.78/x
  3. Step 3: Cross multiply
    13,152.07x = 19,731.75 × 7,312.78
  4. Step 4: Simplify right side
    13,152.07x = 144,293,946.77
  5. Step 5: Solve for x
    x = 144,293,946.77/13,152.07
  6. Step 6: Final answer
    x = 10,971.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.