Home / 10,020,985.90-15,031,478.85-8,586,095.20

Finding the Fourth Proportional to 10,020,985.90, 15,031,478.85 and 8,586,095.20

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Solution

The fourth proportional to 10,020,985.90, 15,031,478.85 and 8,586,095.20 is: 12,879,142.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020,985.90 : 15,031,478.85 = 8,586,095.20 : x
  2. Step 2: Convert to fraction form
    10,020,985.90/15,031,478.85 = 8,586,095.20/x
  3. Step 3: Cross multiply
    10,020,985.90x = 15,031,478.85 × 8,586,095.20
  4. Step 4: Simplify right side
    10,020,985.90x = 129,061,708,402,886.50
  5. Step 5: Solve for x
    x = 129,061,708,402,886.50/10,020,985.90
  6. Step 6: Final answer
    x = 12,879,142.80

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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.