Home / 21,302.47-31,953.74-21,271.69

Finding the Fourth Proportional to 21,302.47, 31,953.74 and 21,271.69

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Solution

The fourth proportional to 21,302.47, 31,953.74 and 21,271.69 is: 31,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.47 : 31,953.74 = 21,271.69 : x
  2. Step 2: Convert to fraction form
    21,302.47/31,953.74 = 21,271.69/x
  3. Step 3: Cross multiply
    21,302.47x = 31,953.74 × 21,271.69
  4. Step 4: Simplify right side
    21,302.47x = 679,710,051.62
  5. Step 5: Solve for x
    x = 679,710,051.62/21,302.47
  6. Step 6: Final answer
    x = 31,907.57

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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.