Home / 19,271.60-26,564.04-15,728.72

Finding the Fourth Proportional to 19,271.60, 26,564.04 and 15,728.72

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Solution

The fourth proportional to 19,271.60, 26,564.04 and 15,728.72 is: 21,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.60 : 26,564.04 = 15,728.72 : x
  2. Step 2: Convert to fraction form
    19,271.60/26,564.04 = 15,728.72/x
  3. Step 3: Cross multiply
    19,271.60x = 26,564.04 × 15,728.72
  4. Step 4: Simplify right side
    19,271.60x = 417,818,347.23
  5. Step 5: Solve for x
    x = 417,818,347.23/19,271.60
  6. Step 6: Final answer
    x = 21,680.52

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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.