Home / 19,931.40-29,897.10-6,784.20

Finding the Fourth Proportional to 19,931.40, 29,897.10 and 6,784.20

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Solution

The fourth proportional to 19,931.40, 29,897.10 and 6,784.20 is: 10,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.40 : 29,897.10 = 6,784.20 : x
  2. Step 2: Convert to fraction form
    19,931.40/29,897.10 = 6,784.20/x
  3. Step 3: Cross multiply
    19,931.40x = 29,897.10 × 6,784.20
  4. Step 4: Simplify right side
    19,931.40x = 202,827,905.82
  5. Step 5: Solve for x
    x = 202,827,905.82/19,931.40
  6. Step 6: Final answer
    x = 10,176.30

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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.