Home / 19,031.40-28,547.10-18,666.90

Finding the Fourth Proportional to 19,031.40, 28,547.10 and 18,666.90

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Solution

The fourth proportional to 19,031.40, 28,547.10 and 18,666.90 is: 28,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,031.40 : 28,547.10 = 18,666.90 : x
  2. Step 2: Convert to fraction form
    19,031.40/28,547.10 = 18,666.90/x
  3. Step 3: Cross multiply
    19,031.40x = 28,547.10 × 18,666.90
  4. Step 4: Simplify right side
    19,031.40x = 532,885,860.99
  5. Step 5: Solve for x
    x = 532,885,860.99/19,031.40
  6. Step 6: Final answer
    x = 28,000.35

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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.